After installing MiKTeX 2.9 on Windows 7, I can open TeXworks but only if I do not use the MiKTeX updater. After updating MiKTeX after installation and whenever I try to open TeXworks, I get the error message "... MiKTeX209-jpeg.dll is missing". I have reinstalled several times but have not been able to resolve the issue.
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The dll is in my miktex in the package miktex-jpeg-bib-2.9. Check (with the package manager (admin) if it is installed. – Ulrike Fischer Dec 27 '16 at 18:04
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The package miktex-jpeg-bib-2.9 is installed – BSH Dec 27 '16 at 18:09
4 Answers
See bug at Miktex sourceforge:
Solutions are given by the bug opener in link.
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I installed
miktex-jpeg-binfrom the package manager and it worked. Thanks! – User Feb 10 '17 at 15:07
If you just installed LyX and Miktex for the first time on your computer (as I did on a brand new computer), you can just Synchronize Miktex (to update packages list), then do an Update, this will fix the missing DLL issues.
Then you have to reconfigure LyX (LyX > Tools > Reconfigure) in order to refresh the document templates (else you will get a "missing article.cls" error).
Open the miktex package manager in admin mode (should be available from start menu programs). Install all uninstalled packages in the category \Miktex X.X executables (windows-x86). That should (hopefully) fix your problem.
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This is also happened to me when I installed TexStudio and updated the Miktex. But the problem is fixed after I opened the MiKTex Package Manager (Admin) then installed manually miktex-jpeg-bin-2.9 and miktex-latex. Maybe your problem can be solved by the same ways too.