See this support article. How do I create a screenshot of my problem? It is best to use a compressed image type like PNG or JPG to save the screenshot and make sure that you do not exceed a maximum file size of 1 MB.

Then use the Browse .... button below the Post a Reply text box to upload the screenshot.

Could be a problem with the maintenance service that provides updates in the background.

• https://support.mozilla.org/kb/what-mozilla-maintenance-service

You can try to uninstall the maintenance service in the Windows Control Panel and reinstall the maintenance service as a user by running the maintenanceservice_installer.exe file in the Firefox program folder.

• (32 bit Windows) "C:\Program Files\Mozilla Firefox\"
• (64 bit Windows) "C:\Program Files (x86)\Mozilla Firefox\"