diff --git a/lib/doc/LaTeXConfig.lyx b/lib/doc/LaTeXConfig.lyx
index 6bdfa442b7..8e78f88640 100644
--- a/lib/doc/LaTeXConfig.lyx
+++ b/lib/doc/LaTeXConfig.lyx
@@ -3574,7 +3574,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.jstatsoft.org/downloads/JSSstyle.zip
+http://www.jstatsoft.org/public/journals/1/jss-style.zip
 \end_layout
 
 \end_inset
@@ -4153,7 +4153,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://spie.org/app/Publications/index.cfm?fuseaction=authinfo&type=proceedings
+http://www.ctan.org/tex-archive/macros/latex/contrib/spie
 \end_layout
 
 \end_inset
@@ -4684,7 +4684,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.photogrammetry.ethz.ch/tarasp_workshop/isprs.cls
+http://www.isprs.org/documents/orangebook/LATEX/ISPRSguidelines_authors_latex.zip
 \end_layout
 
 \end_inset
@@ -5680,7 +5680,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.jurabib.org
+http://sourceforge.net/projects/jurabib/
 \end_layout
 
 \end_inset
diff --git a/lib/doc/UserGuide.lyx b/lib/doc/UserGuide.lyx
index c735705ac4..4b1f1cac05 100644
--- a/lib/doc/UserGuide.lyx
+++ b/lib/doc/UserGuide.lyx
@@ -46525,7 +46525,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tex.ac.uk/faq/
+http://www.tex.ac.uk/FAQ-LaTeX2HTML.html
 \end_layout
 
 \end_inset
diff --git a/lib/doc/de/UserGuide.lyx b/lib/doc/de/UserGuide.lyx
index 573487e962..6c2842942f 100644
--- a/lib/doc/de/UserGuide.lyx
+++ b/lib/doc/de/UserGuide.lyx
@@ -46083,7 +46083,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tex.ac.uk/faq/
+http://www.tex.ac.uk/FAQ-LaTeX2HTML.html
 \end_layout
 
 \end_inset
diff --git a/lib/doc/es/UserGuide.lyx b/lib/doc/es/UserGuide.lyx
index 1f3ad77b98..f4a84bce45 100644
--- a/lib/doc/es/UserGuide.lyx
+++ b/lib/doc/es/UserGuide.lyx
@@ -47066,7 +47066,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tex.ac.uk/faq/
+http://www.tex.ac.uk/FAQ-LaTeX2HTML.html
 \end_layout
 
 \end_inset
diff --git a/lib/doc/he/Tutorial.lyx b/lib/doc/he/Tutorial.lyx
index 031ee62862..025bdb5115 100644
--- a/lib/doc/he/Tutorial.lyx
+++ b/lib/doc/he/Tutorial.lyx
@@ -1268,7 +1268,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.math.tau.ac.il/~dekelts/lyx/ttf.html
+http://ctan.math.utah.edu/ctan/tex-archive/info/TrueType/
 \end_layout
 
 \end_inset
diff --git a/lib/doc/ja/LaTeXConfig.lyx b/lib/doc/ja/LaTeXConfig.lyx
index 63ce5c5165..e4c31336f2 100644
--- a/lib/doc/ja/LaTeXConfig.lyx
+++ b/lib/doc/ja/LaTeXConfig.lyx
@@ -3345,7 +3345,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.jstatsoft.org/downloads/JSSstyle.zip
+http://www.jstatsoft.org/public/journals/1/jss-style.zip
 \end_layout
 
 \end_inset
@@ -3897,7 +3897,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://spie.org/app/Publications/index.cfm?fuseaction=authinfo&type=proceedings
+http://www.ctan.org/tex-archive/macros/latex/contrib/spie
 \end_layout
 
 \end_inset
@@ -4390,7 +4390,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.photogrammetry.ethz.ch/tarasp_workshop/isprs.cls
+http://www.isprs.org/documents/orangebook/LATEX/ISPRSguidelines_authors_latex.zip
 \end_layout
 
 \end_inset
@@ -5341,7 +5341,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.jurabib.org
+http://sourceforge.net/projects/jurabib/
 \end_layout
 
 \end_inset
diff --git a/lib/doc/ja/UserGuide.lyx b/lib/doc/ja/UserGuide.lyx
index ca99c703f6..78cdbc59c3 100644
--- a/lib/doc/ja/UserGuide.lyx
+++ b/lib/doc/ja/UserGuide.lyx
@@ -37845,7 +37845,7 @@ name "subsec:言語設定"
 のメニューで使用される言語を選択することができます。現在の翻訳状況については、
 \begin_inset CommandInset href
 LatexCommand href
-target "http://www.lyx.org/l18n"
+target "http://www.lyx.org/I18n"
 
 \end_inset
 
@@ -39537,7 +39537,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tex.ac.uk/faq/
+http://www.tex.ac.uk/FAQ-LaTeX2HTML.html
 \end_layout
 
 \end_inset
diff --git a/lib/examples/de/linguistics.lyx b/lib/examples/de/linguistics.lyx
index 96b0973595..90558f4c7d 100644
--- a/lib/examples/de/linguistics.lyx
+++ b/lib/examples/de/linguistics.lyx
@@ -2173,7 +2173,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/graphics/pgf/contrib/forest/
+http://www.ctan.org/tex-archive/graphics/pgf/contrib/forest
 \end_layout
 
 \end_inset
diff --git a/lib/examples/fr/xypic.lyx b/lib/examples/fr/xypic.lyx
index 5b0c04de05..687629f99f 100644
--- a/lib/examples/fr/xypic.lyx
+++ b/lib/examples/fr/xypic.lyx
@@ -3682,7 +3682,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3728,7 +3728,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyrefer.pdf
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyrefer.pdf
 \end_layout
 
 \end_inset
@@ -3872,7 +3872,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.math.columbia.edu/~lauda/xy/
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/instant_preview.lyx b/lib/examples/instant_preview.lyx
index 90f73aca74..6922f7ed63 100644
--- a/lib/examples/instant_preview.lyx
+++ b/lib/examples/instant_preview.lyx
@@ -130,7 +130,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.math.columbia.edu/~lauda/xy/
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/ja/xypic.lyx b/lib/examples/ja/xypic.lyx
index b57df5ebc5..34e071f712 100644
--- a/lib/examples/ja/xypic.lyx
+++ b/lib/examples/ja/xypic.lyx
@@ -3278,7 +3278,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tug.org/tex-archive/help/Catalogue/entries/preview-latex.html
+http://www.gnu.org/software/auctex/preview-latex.html
 \end_layout
 
 \end_inset
@@ -3300,7 +3300,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.tug.org/tex-archive/help/Catalogue/entries/xypic.html
+http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3369,7 +3369,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://www.dpmms.cam.ac.uk/~al366/xytutorial.html
+http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3416,7 +3416,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://filip.ouvaton.org/xypic/xymatrix/index.html
+http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/examples/linguistics.lyx b/lib/examples/linguistics.lyx
index c4e41d6776..bb3c01cfa2 100644
--- a/lib/examples/linguistics.lyx
+++ b/lib/examples/linguistics.lyx
@@ -2133,7 +2133,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-https://www.ctan.org/tex-archive/graphics/pgf/contrib/forest/
+http://www.ctan.org/tex-archive/graphics/pgf/contrib/forest
 \end_layout
 
 \end_inset
diff --git a/lib/examples/seminar.lyx b/lib/examples/seminar.lyx
index 2fe5bd423d..59c582a07a 100644
--- a/lib/examples/seminar.lyx
+++ b/lib/examples/seminar.lyx
@@ -188,7 +188,7 @@ It is really helpful to read the seminar handbook:
 \begin_inset CommandInset href
 LatexCommand href
 name "sem-user.pdf"
-target "http://mirrors.ctan.org/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
+target "https://www.ctan.org/tex-archive/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
 
 \end_inset
 
@@ -630,7 +630,7 @@ See
 \begin_inset CommandInset href
 LatexCommand href
 name "sem-user.pdf"
-target "http://mirrors.ctan.org/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
+target "https://www.ctan.org/tex-archive/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
 
 \end_inset
 
@@ -720,7 +720,7 @@ E of the seminar handbook
 \begin_inset CommandInset href
 LatexCommand href
 name "sem-user.pdf"
-target "http://mirrors.ctan.org/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
+target "https://www.ctan.org/tex-archive/macros/latex/contrib/seminar/doc/seminar-doc.pdf"
 
 \end_inset
 
diff --git a/lib/examples/xypic.lyx b/lib/examples/xypic.lyx
index 5e53a3f414..4c9e2a2ee1 100644
--- a/lib/examples/xypic.lyx
+++ b/lib/examples/xypic.lyx
@@ -3705,7 +3705,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyguide.pdf
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
@@ -3748,7 +3748,7 @@ status collapsed
 
 \begin_layout Plain Layout
 
-http://mirrors.ctan.org/macros/generic/diagrams/xypic/doc/xyrefer.pdf
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyrefer.pdf
 \end_layout
 
 \end_inset
@@ -3879,7 +3879,7 @@ status open
 
 \begin_layout Plain Layout
 
-http://www.math.columbia.edu/~lauda/xy/
+https://www.ctan.org/tex-archive/macros/generic/diagrams/xypic/doc/xyguide.pdf
 \end_layout
 
 \end_inset
diff --git a/lib/templates/ACM-siggraph.lyx b/lib/templates/ACM-siggraph.lyx
index cdcc2812a4..27a14f295b 100644
--- a/lib/templates/ACM-siggraph.lyx
+++ b/lib/templates/ACM-siggraph.lyx
@@ -563,7 +563,7 @@ status open
 
 \begin_layout Plain Layout
 
-http://www.acm.org/class/1998/
+http://www.siggraph.org/sites/default/files/acmsiggraph.zip
 \end_layout
 
 \end_inset