I too have stop code IRQL not less or equal. Tried safe mode but still get the same message
Problem started on 9th January after latest windows 10 update. Tried putting TB in safe mode but still get same stop code message. Tried system restore to day previous but comes up with file error and will not restore.
Chosen solution
re :Tried running TB in safe mode
But did you reboot the computer and run computer in 'Safe Mode with Networking' and run Thunderbird as normal ?
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re :Problem started on 9th January after latest windows 10 update. Does it occur when you start computer ? Or can you run various other programs ok ?
Suggest you make sure all your various drivers are up to date.
Assuming this only occurs when you start Thunderbird. Start computer in 'Safe mode with Networking' and then start Thunderbird do you still have the same problem ?
All other programs seem fine. only when I click on TB for my e-mails. Tried running TB in safe mode but still get the same stop message.
Chosen Solution
re :Tried running TB in safe mode
But did you reboot the computer and run computer in 'Safe Mode with Networking' and run Thunderbird as normal ?
Problem was solved when I went back to the previous version of Windows 10.