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Firefox 82.0 Crashes on Startup - BEX64

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After updating to 82.0, Firefox crashes on startup - no crash reporter come up. The error in the Application Event Log is below. Installing R81.0.2 works OK. Windows 10 x64.

Fault bucket 1275581050191285046, type 5 Event Name: BEX64 Response: Not available Cab Id: 0

Problem signature: P1: firefox.exe P2: P3: 5f8738dd P4: ntdll.dll P5: 10.0.18362.1049 P6: b5beef21 P7: 00000000000a1170 P8: c0000409 P9: 000000000000000a P10:

Attached files: \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERDE95.tmp.dmp \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERDF71.tmp.WERInternalMetadata.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERDFB0.tmp.xml \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERDFCF.tmp.csv \\?\C:\ProgramData\Microsoft\Windows\WER\Temp\WERE02E.tmp.txt

These files may be available here: \\?\C:\ProgramData\Microsoft\Windows\WER\ReportArchive\AppCrash_firefox.exe_1b544b54fcc252cdfdf6b194343645212cb8_9cb06cfd_72412bc8-45a1-4fdb-844b-7682c6d71920

Analysis symbol: Rechecking for solution: 0 Report Id: 0ccc8f5e-5764-4a93-a37d-10117de847df Report Status: 268435456 Hashed bucket: 62447e0c1c305c5161b3c634f2df0b36 Cab Guid: 0

All Replies (3)

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hi brett, thank you for the report (i've seen a few similar ones from other affected users as well). would you be able to come up with a more narrow regression range with a tool like - there's a short tutorial video on its homepage, if anything is unclear please also feel free to just ask...

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You can do a malware scan just to be sure as BEX issues are sometimes linked to malware.

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Do you have Digital Guardian installed?