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Firefox crashes when system file dialog is displayed

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  • Firefox crashes whenever the Windows file dialog is displayed (e.g. if choosing a save location when downloading files).
  • SolidWorks PDM appears to cause this, see information here: https://forum.solidworks.com/thread/220894
  • Until two days ago, running Firefox in Windows 7 compatibility mode solved the problem. However running Firefox in Windows 7 compatibility mode now results in blank tabs - similar to as described here: https://support.mozilla.org/en-US/questions/1231445.

So I am caught between a rock and a hard place. I have to switch off compatibility mode for browsing to work. But then Firefox crashes any time I want to download or upload a file.

If anyone has any idea's I'd appreciate it. I really don't want to be forced back onto Chrome...

* Firefox crashes whenever the Windows file dialog is displayed (e.g. if choosing a save location when downloading files). * SolidWorks PDM appears to cause this, see information here: https://forum.solidworks.com/thread/220894 * Until two days ago, running Firefox in Windows 7 compatibility mode solved the problem. However running Firefox in Windows 7 compatibility mode now results in blank tabs - similar to as described here: https://support.mozilla.org/en-US/questions/1231445. So I am caught between a rock and a hard place. I have to switch off compatibility mode for browsing to work. But then Firefox crashes any time I want to download or upload a file. If anyone has any idea's I'd appreciate it. I really don't want to be forced back onto Chrome...
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Additional System Details

Application

  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:74.0) Gecko/20100101 Firefox/74.0

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Question owner

Some additional information in my original (archived) question here: https://support.mozilla.org/en-US/questions/1214584

Some additional information in my original (archived) question here: https://support.mozilla.org/en-US/questions/1214584
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