diff --git a/lib/doc/Additional.lyx b/lib/doc/Additional.lyx
index b34d3546cb..4c38adb0d6 100644
--- a/lib/doc/Additional.lyx
+++ b/lib/doc/Additional.lyx
@@ -10358,7 +10358,7 @@ Powerdot
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/EmbeddedObjects.lyx b/lib/doc/EmbeddedObjects.lyx
index 7dd7e8b7f8..3e059627a2 100644
--- a/lib/doc/EmbeddedObjects.lyx
+++ b/lib/doc/EmbeddedObjects.lyx
@@ -49878,7 +49878,7 @@ Documentation of the \SpecialChar LaTeX
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/Math.lyx b/lib/doc/Math.lyx
index 7782b1d54c..314e575372 100644
--- a/lib/doc/Math.lyx
+++ b/lib/doc/Math.lyx
@@ -491,7 +491,7 @@ AmS
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -42561,7 +42561,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/UserGuide.lyx b/lib/doc/UserGuide.lyx
index ac8b776726..b49d276e51 100644
--- a/lib/doc/UserGuide.lyx
+++ b/lib/doc/UserGuide.lyx
@@ -58142,7 +58142,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -58162,7 +58162,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -58348,7 +58348,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -58367,7 +58367,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -58387,7 +58387,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Options"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -58406,7 +58406,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -58666,7 +58666,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -58709,7 +58709,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/ar/UserGuide.lyx b/lib/doc/ar/UserGuide.lyx
index 9fc678d007..6f09a9281a 100644
--- a/lib/doc/ar/UserGuide.lyx
+++ b/lib/doc/ar/UserGuide.lyx
@@ -54327,7 +54327,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "وثيقة عن"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -54347,7 +54347,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -54512,7 +54512,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "وثيقة"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -54531,7 +54531,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -54551,7 +54551,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "خيارات"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -54570,7 +54570,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -54771,7 +54771,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "وثيقة"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -54804,7 +54804,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/de/Additional.lyx b/lib/doc/de/Additional.lyx
index fb177ac5fa..88c2d0629d 100644
--- a/lib/doc/de/Additional.lyx
+++ b/lib/doc/de/Additional.lyx
@@ -7494,7 +7494,7 @@ Elsevier
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/elsarticle/doc/elsdoc.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/elsarticle/doc/elsdoc.pdf"
 literal "false"
 
 \end_inset
@@ -10398,7 +10398,7 @@ Powerdot
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/de/EmbeddedObjects.lyx b/lib/doc/de/EmbeddedObjects.lyx
index 81a57def7a..ddec2182eb 100644
--- a/lib/doc/de/EmbeddedObjects.lyx
+++ b/lib/doc/de/EmbeddedObjects.lyx
@@ -50448,7 +50448,7 @@ Dokumentation des \SpecialChar LaTeX
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/de/Math.lyx b/lib/doc/de/Math.lyx
index 4913dbbbb3..4ecfa08bcf 100644
--- a/lib/doc/de/Math.lyx
+++ b/lib/doc/de/Math.lyx
@@ -510,7 +510,7 @@ AmS
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -5605,7 +5605,7 @@ B.
 \series bold
 ×
 \series default
-4
+
 \begin_inset space ~
 \end_inset
 
@@ -12584,7 +12584,7 @@ qquad
 \begin_inset Text
 
 \begin_layout Plain Layout
-4
+
 \end_layout
 
 \end_inset
@@ -12662,7 +12662,7 @@ hfill
 \begin_inset Text
 
 \begin_layout Plain Layout
-5
+
 \end_layout
 
 \end_inset
@@ -12832,7 +12832,7 @@ Leerraum
 \begin_inset space ~
 \end_inset
 
-5
+
 \begin_inset space \thinspace{}
 \end_inset
 
@@ -42495,7 +42495,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Dokumentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/de/UserGuide.lyx b/lib/doc/de/UserGuide.lyx
index 859f1f4a42..33b7433aad 100644
--- a/lib/doc/de/UserGuide.lyx
+++ b/lib/doc/de/UserGuide.lyx
@@ -55799,7 +55799,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Dokumentation"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -55819,7 +55819,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -56005,7 +56005,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Dokumentation"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -56024,7 +56024,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -56044,7 +56044,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Optionen"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -56063,7 +56063,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -56323,7 +56323,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Dokumentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -56366,7 +56366,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/es/EmbeddedObjects.lyx b/lib/doc/es/EmbeddedObjects.lyx
index 1513507c88..25ea6b3c33 100644
--- a/lib/doc/es/EmbeddedObjects.lyx
+++ b/lib/doc/es/EmbeddedObjects.lyx
@@ -47844,7 +47844,7 @@ Documentación del paquete \SpecialChar LaTeX
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/es/Math.lyx b/lib/doc/es/Math.lyx
index ee38e7e63e..0edaab42a0 100644
--- a/lib/doc/es/Math.lyx
+++ b/lib/doc/es/Math.lyx
@@ -469,7 +469,7 @@ En el archivo
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -39621,7 +39621,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentación"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/es/UserGuide.lyx b/lib/doc/es/UserGuide.lyx
index 2a166294b3..bda3566b9b 100644
--- a/lib/doc/es/UserGuide.lyx
+++ b/lib/doc/es/UserGuide.lyx
@@ -52276,7 +52276,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentación"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -52296,7 +52296,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -52466,7 +52466,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentación"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -52485,7 +52485,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -52505,7 +52505,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Opciónes"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -52524,7 +52524,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -52728,7 +52728,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentación"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -52763,7 +52763,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/fr/Additional.lyx b/lib/doc/fr/Additional.lyx
index e21a85ae82..1df8462076 100644
--- a/lib/doc/fr/Additional.lyx
+++ b/lib/doc/fr/Additional.lyx
@@ -7711,7 +7711,7 @@ Elsevier
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/elsarticle/doc/elsdoc.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/elsarticle/doc/elsdoc.pdf"
 literal "false"
 
 \end_inset
@@ -11020,7 +11020,7 @@ Powerdot
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/fr/EmbeddedObjects.lyx b/lib/doc/fr/EmbeddedObjects.lyx
index 67ca9d7d52..a1a30df3ec 100644
--- a/lib/doc/fr/EmbeddedObjects.lyx
+++ b/lib/doc/fr/EmbeddedObjects.lyx
@@ -50757,7 +50757,7 @@ Documentation du paquetage \SpecialChar LaTeX
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/fr/Math.lyx b/lib/doc/fr/Math.lyx
index 73549ecacb..8a046f1952 100644
--- a/lib/doc/fr/Math.lyx
+++ b/lib/doc/fr/Math.lyx
@@ -616,7 +616,7 @@ dans le fichier
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -6180,7 +6180,7 @@ right
 \begin_inset space ~
 \end_inset
 
-4
+
 \series bold
 ×
 \series default
@@ -13316,7 +13316,7 @@ qquad
 \begin_inset Text
 
 \begin_layout Plain Layout
-4
+
 \end_layout
 
 \end_inset
@@ -13396,7 +13396,7 @@ hfill
 \begin_inset Text
 
 \begin_layout Plain Layout
-5
+
 \end_layout
 
 \end_inset
@@ -43889,7 +43889,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/fr/UserGuide.lyx b/lib/doc/fr/UserGuide.lyx
index 1c94f24ba1..896cc5a2ab 100644
--- a/lib/doc/fr/UserGuide.lyx
+++ b/lib/doc/fr/UserGuide.lyx
@@ -58448,7 +58448,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -58468,7 +58468,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -58654,7 +58654,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -58673,7 +58673,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -58693,7 +58693,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Options"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -58712,7 +58712,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -58971,7 +58971,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -59014,7 +59014,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/ja/Additional.lyx b/lib/doc/ja/Additional.lyx
index bd6424f926..dde0d6413c 100644
--- a/lib/doc/ja/Additional.lyx
+++ b/lib/doc/ja/Additional.lyx
@@ -11689,7 +11689,7 @@ Powerdot
 \begin_inset CommandInset href
 LatexCommand href
 name "CTAN"
-target "http://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/powerdot/doc/powerdot.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/ja/EmbeddedObjects.lyx b/lib/doc/ja/EmbeddedObjects.lyx
index ef37784553..ee303acf05 100644
--- a/lib/doc/ja/EmbeddedObjects.lyx
+++ b/lib/doc/ja/EmbeddedObjects.lyx
@@ -51153,7 +51153,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/ja/Math.lyx b/lib/doc/ja/Math.lyx
index dbac87aa90..9d5f830fb2 100644
--- a/lib/doc/ja/Math.lyx
+++ b/lib/doc/ja/Math.lyx
@@ -567,7 +567,7 @@ AmS
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -46600,7 +46600,7 @@ mhchem
 \begin_inset CommandInset href
 LatexCommand href
 name "取扱説明書"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/ja/UserGuide.lyx b/lib/doc/ja/UserGuide.lyx
index 125e1b9c54..37d81e69d9 100644
--- a/lib/doc/ja/UserGuide.lyx
+++ b/lib/doc/ja/UserGuide.lyx
@@ -60258,7 +60258,7 @@ Bib\SpecialChar TeX
 \begin_inset CommandInset href
 LatexCommand href
 name "取扱説明書"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -60273,7 +60273,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -60481,7 +60481,7 @@ makeindex
 \begin_inset CommandInset href
 LatexCommand href
 name "取扱説明書"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -60496,7 +60496,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -60520,7 +60520,7 @@ makeindex
 \begin_inset CommandInset href
 LatexCommand href
 name "オプション"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -60535,7 +60535,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -60850,7 +60850,7 @@ fancyhdr
 \begin_inset CommandInset href
 LatexCommand href
 name "取扱説明書"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -60865,7 +60865,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/doc/ru/EmbeddedObjects.lyx b/lib/doc/ru/EmbeddedObjects.lyx
index 7ffeec82d0..b1d5a30668 100644
--- a/lib/doc/ru/EmbeddedObjects.lyx
+++ b/lib/doc/ru/EmbeddedObjects.lyx
@@ -48221,7 +48221,7 @@ Documentation of the \SpecialChar LaTeX
 \begin_inset CommandInset href
 LatexCommand href
 name "pdfpages"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/pdfpages/pdfpages.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/pdfpages/pdfpages.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/ru/Math.lyx b/lib/doc/ru/Math.lyx
index 0c1c87bb72..87cfd009a4 100644
--- a/lib/doc/ru/Math.lyx
+++ b/lib/doc/ru/Math.lyx
@@ -522,7 +522,7 @@ AmS
 \begin_inset CommandInset href
 LatexCommand href
 name "amsguide.pdf"
-target "https://www.ctan.org/tex-archive/macros/amstex/doc/amsguide.pdf"
+target "https://mirrors.ctan.org/macros/amstex/doc/amsguide.pdf"
 literal "false"
 
 \end_inset
@@ -39169,7 +39169,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/mhchem/mhchem.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/mhchem/mhchem.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/doc/ru/UserGuide.lyx b/lib/doc/ru/UserGuide.lyx
index 1af617eb38..77d94393a0 100644
--- a/lib/doc/ru/UserGuide.lyx
+++ b/lib/doc/ru/UserGuide.lyx
@@ -51929,7 +51929,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf"
+target "https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf"
 literal "false"
 
 \end_inset
@@ -51949,7 +51949,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/biblio/bibtex/contrib/doc/btxdoc.pdf
+https://mirrors.ctan.org/biblio/bibtex/contrib/doc/btxdoc.pdf
 \end_layout
 
 \end_inset
@@ -52117,7 +52117,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf"
 literal "false"
 
 \end_inset
@@ -52136,7 +52136,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/makeindex.pdf
+https://mirrors.ctan.org/indexing/makeindex/doc/makeindex.pdf
 \end_layout
 
 \end_inset
@@ -52156,7 +52156,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Options"
-target "https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi"
+target "https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi"
 literal "false"
 
 \end_inset
@@ -52175,7 +52175,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/indexing/makeindex/doc/manpages.dvi
+https://mirrors.ctan.org/indexing/makeindex/doc/manpages.dvi
 \end_layout
 
 \end_inset
@@ -52378,7 +52378,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf"
 literal "false"
 
 \end_inset
@@ -52412,7 +52412,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/latex/contrib/fancyhdr/fancyhdr.pdf
+https://mirrors.ctan.org/macros/latex/contrib/fancyhdr/fancyhdr.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/Graphics_and_Insets/XY-Pic.lyx b/lib/examples/Graphics_and_Insets/XY-Pic.lyx
index 1f922d0bf7..6b85f3f04d 100644
--- a/lib/examples/Graphics_and_Insets/XY-Pic.lyx
+++ b/lib/examples/Graphics_and_Insets/XY-Pic.lyx
@@ -3922,7 +3922,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyrefer.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyrefer.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/Modules/Fancy_Colored_Boxes.lyx b/lib/examples/Modules/Fancy_Colored_Boxes.lyx
index 575c15988b..7ce1325429 100644
--- a/lib/examples/Modules/Fancy_Colored_Boxes.lyx
+++ b/lib/examples/Modules/Fancy_Colored_Boxes.lyx
@@ -7734,7 +7734,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://ctan.org/tex-archive/macros/latex/contrib/tcolorbox/tcolorbox.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/tcolorbox/tcolorbox.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/examples/Presentations/Beamer.lyx b/lib/examples/Presentations/Beamer.lyx
index abd9d00d66..554200f395 100644
--- a/lib/examples/Presentations/Beamer.lyx
+++ b/lib/examples/Presentations/Beamer.lyx
@@ -4662,7 +4662,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/beamer/doc/beameruserguide.pdf
+https://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/de/Presentations/Beamer.lyx b/lib/examples/de/Presentations/Beamer.lyx
index b2a997dad5..3283455907 100644
--- a/lib/examples/de/Presentations/Beamer.lyx
+++ b/lib/examples/de/Presentations/Beamer.lyx
@@ -5212,7 +5212,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/beamer/doc/beameruserguide.pdf
+https://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/fr/Graphics_and_Insets/XY-Pic.lyx b/lib/examples/fr/Graphics_and_Insets/XY-Pic.lyx
index 98cf757f52..21eef71466 100644
--- a/lib/examples/fr/Graphics_and_Insets/XY-Pic.lyx
+++ b/lib/examples/fr/Graphics_and_Insets/XY-Pic.lyx
@@ -3880,7 +3880,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyrefer.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyrefer.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/fr/Presentations/Beamer.lyx b/lib/examples/fr/Presentations/Beamer.lyx
index 3ce0e37745..467ee0356e 100644
--- a/lib/examples/fr/Presentations/Beamer.lyx
+++ b/lib/examples/fr/Presentations/Beamer.lyx
@@ -4781,7 +4781,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/beamer/doc/beameruserguide.pdf
+https://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/ja/Graphics_and_Insets/XY-Pic.lyx b/lib/examples/ja/Graphics_and_Insets/XY-Pic.lyx
index b1b1b1f288..13f9142036 100644
--- a/lib/examples/ja/Graphics_and_Insets/XY-Pic.lyx
+++ b/lib/examples/ja/Graphics_and_Insets/XY-Pic.lyx
@@ -3487,7 +3487,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3559,7 +3559,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3609,7 +3609,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/ja/Presentations/Beamer.lyx b/lib/examples/ja/Presentations/Beamer.lyx
index 159b5e2f95..f8c32e2c9f 100644
--- a/lib/examples/ja/Presentations/Beamer.lyx
+++ b/lib/examples/ja/Presentations/Beamer.lyx
@@ -4256,7 +4256,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/beamer/doc/beameruserguide.pdf
+https://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/ru/Graphics_and_Insets/XY-Pic.lyx b/lib/examples/ru/Graphics_and_Insets/XY-Pic.lyx
index 57135282b2..02a46efa07 100644
--- a/lib/examples/ru/Graphics_and_Insets/XY-Pic.lyx
+++ b/lib/examples/ru/Graphics_and_Insets/XY-Pic.lyx
@@ -4124,7 +4124,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyrefer.pdf
+https://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyrefer.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/ru/Modules/Fancy_Colored_Boxes.lyx b/lib/examples/ru/Modules/Fancy_Colored_Boxes.lyx
index db8f32a9d8..2ce715f020 100644
--- a/lib/examples/ru/Modules/Fancy_Colored_Boxes.lyx
+++ b/lib/examples/ru/Modules/Fancy_Colored_Boxes.lyx
@@ -7962,7 +7962,7 @@ literal "true"
 \begin_inset CommandInset href
 LatexCommand href
 name "Documentation"
-target "https://ctan.org/tex-archive/macros/latex/contrib/tcolorbox/tcolorbox.pdf"
+target "https://mirrors.ctan.org/macros/latex/contrib/tcolorbox/tcolorbox.pdf"
 literal "false"
 
 \end_inset
diff --git a/lib/examples/ru/Presentations/Beamer.lyx b/lib/examples/ru/Presentations/Beamer.lyx
index 312a6617f2..d48b4e0723 100644
--- a/lib/examples/ru/Presentations/Beamer.lyx
+++ b/lib/examples/ru/Presentations/Beamer.lyx
@@ -4590,7 +4590,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/beamer/doc/beameruserguide.pdf
+https://mirrors.ctan.org/macros/latex/contrib/beamer/doc/beameruserguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/templates/Posters/A0_Poster/Colored.lyx b/lib/templates/Posters/A0_Poster/Colored.lyx
index c1cc1a33be..ead31f9e99 100644
--- a/lib/templates/Posters/A0_Poster/Colored.lyx
+++ b/lib/templates/Posters/A0_Poster/Colored.lyx
@@ -145,7 +145,7 @@ status open
 
 \begin_layout Plain Layout
 
-https://ctan.org/tex-archive/macros/latex/contrib/tcolorbox/tcolorbox.pdf
+https://mirrors.ctan.org/macros/latex/contrib/tcolorbox/tcolorbox.pdf
 \end_layout
 
 \end_inset