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Firefox crashing after a few seconds upon startup

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This is my crash ID: bp-ff99f648-78ab-4cad-b1f5-7aaa70240902 I've already tried troubleshoot mode, same result. I do have a userContent.css file, but deleting it makes no difference, and I can think of no other major change I've made to my installation.

I would prefer not to have to reinstall Firefox.

This is my crash ID: bp-ff99f648-78ab-4cad-b1f5-7aaa70240902 I've already tried troubleshoot mode, same result. I do have a userContent.css file, but deleting it makes no difference, and I can think of no other major change I've made to my installation. I would prefer not to have to reinstall Firefox.

All Replies (7)

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One more thing, this started happening after I logged into a Mozilla account for syncing.

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Update: After deleting the signedInUser.json file underneath the profile, it the issue seems to have been fixed.

Unfortunately, signing back in again causes the issue again.

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Windows home or pro? What security software are you running? What version of Firefox? Also try another version of Firefox. https://www.mozilla.org/en-US/firefox/channel/desktop/Firefox Make sure to install in a different directory from the current install.

Modified by jonzn4SUSE

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I am running Windows Home 10, no security software except for Windows Defender, and Firefox Stable 129.0.2

Modified by stag-enterprises

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Log into another windows account and see if you have the same issue.

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I don't have any other accounts.

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Create another account.

Add a user account: In the Settings app on your Windows device, select Accounts, Other user or use the following shortcut other Users. Under Add other user , select Add account. Enter the account information for this person to sign in Follow the instructions to finish setting up the account.

https://www.google.com/search?q=Windows+10+user+account&client=firefox-b-1-d&sca_esv=48b4c54c89bd4182&sca_upv=1&ei=_z_WZrPLDvmf5NoP-JDi6QU&ved=0ahUKEwjzxpGQq6WIAxX5D1kFHXiIOF0Q4dUDCBA&oq=Windows+10+user+account&gs_lp=Egxnd3Mtd2l6LXNlcnAiF1dpbmRvd3MgMTAgdXNlciBhY2NvdW50SABQAFgAcAB4AJABAJgBAKABAKoBALgBDMgBAJgCAKACAJgDAJIHAKAHAA&sclient=gws-wiz-serp

Modified by jonzn4SUSE

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