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Blank screen, can not load websites, or view any firefox options (after vc runtime error) how to fix?

  • 3 replies
  • 1 has this problem
  • 29 views
  • Last reply by FredMcD

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How it happened: 1. I installed Anaconda(python3.7) and Visual Studio 2015 (to get the required C++ for TensorFlow) 2. Decided to uninstall Anaconda and Visual Studio 2015 and restarted which is when firefox gave the error vcruntime140_1. dll was not found. 3. I downloaded and installed vc_redist.x64 and restarted 4. Firefox does not give an error anymore but no websites appear (just bank screen). I can see the firefox dropdown tab for options, but clicking options does nothing


What I've tried: 1. Uninstalled firefox using an uninstaller that removes residual files 2. Re-installing firefox 3. Running firefox in safemode and clicking 'restore' as well as trying it in safemode


Chrome is working with no issues, but I prefer firefox.

How it happened: 1. I installed Anaconda(python3.7) and Visual Studio 2015 (to get the required C++ for TensorFlow) 2. Decided to uninstall Anaconda and Visual Studio 2015 and restarted which is when firefox gave the error vcruntime140_1. dll was not found. 3. I downloaded and installed vc_redist.x64 and restarted 4. Firefox does not give an error anymore but no websites appear (just bank screen). I can see the firefox dropdown tab for options, but clicking options does nothing ------- What I've tried: 1. Uninstalled firefox using an uninstaller that removes residual files 2. Re-installing firefox 3. Running firefox in safemode and clicking 'restore' as well as trying it in safemode ---- Chrome is working with no issues, but I prefer firefox.

Chosen solution

Problem resolved. I ended up just using a restore point back before I messed with visual C.

It was most likely caused by firefox needing some visual files that uninstalled when I removed Visual Studio that I originally had but were not included in the VC Runtime redistributable I download.

Thanks for trying to help though :)

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All Replies (3)

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vcruntime140_1. Dll = Microsoft Visual C++

Try reinstalling the whole package.


Some problems occur when your Internet security program was set to trust the previous version of Firefox, but no longer recognizes your updated version as trusted. Now how to fix the problem: To allow Firefox to connect to the Internet again;

  • Make sure your Internet security software is up-to-date (i.e. you are running the latest version).
  • Remove Firefox from your program's list of trusted or recognized programs. For detailed instructions, see

Configure firewalls so that Firefox can access the Internet. {web link}

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Chosen Solution

Problem resolved. I ended up just using a restore point back before I messed with visual C.

It was most likely caused by firefox needing some visual files that uninstalled when I removed Visual Studio that I originally had but were not included in the VC Runtime redistributable I download.

Thanks for trying to help though :)

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That was very good work. Well Done.