no display & no options
web pages don't display but address is shown at tabs, can't see options but other menu options seem to be okay. I uninstalled and erased all related data (I could find) multiple times and reinstalled multiple times but problem remains. I tried refresh, safe mode, etc. At installation I get error VCRUNTIME140_1.dll not found, a susequent installation finishes without errors. I am sending this from another system because I can't use the problem unit for this post. The problem system is similar to this one. I am puzzled and seek help.
Chosen solution
Further, after comparing the installed versions of Visual C++ at these two systems, I noticed 2015 & 2017 were missing at the failing system. How this happened is beyond me. Anyway, following "cor-el"'s suggestion I installed "Visual Studio Community 2019" and Eureka it works again.
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Check if there is an updates to the drivers https://support.mozilla.org/en-US/kb/upgrade-graphics-drivers-use-hardware-acceleration
To open Firefox in SafeMode holding down the Shift and on Mac Options key, and then starting Firefox. https://support.mozilla.org/en-US/kb/troubleshoot-firefox-issues-using-safe-mode
Modified by RageE1der
treg:
do a windows search of your disk for:
VCRUNTIME140
there should be a bunch of them, plus 1 in the Mozilla FF folder
You can check for issues caused by a corrupted or incomplete Visual C++ installation that is missing runtime components (Redistributable Packages) required by Firefox, especially VCRUNTIME140_1.dll.
See "Visual Studio 2015, 2017 and 2019":
The working system and the failing system has the same occurrence of VCRUNTIME140_1.dll (two entries)
The file might not be registered properly.
Did you try to reinstall this component ?
I noticed in Troubleshooting info: Launcher Process: disabled due to failure address bar entries about: ...... don't work
Chosen Solution
Further, after comparing the installed versions of Visual C++ at these two systems, I noticed 2015 & 2017 were missing at the failing system. How this happened is beyond me. Anyway, following "cor-el"'s suggestion I installed "Visual Studio Community 2019" and Eureka it works again.