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PC frequently crashes on bootup (KMODE_EXCEPTION_NOT_HANDLED) [Solved][Closed]


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Hi.

For quite some time, I have been getting random crashes on boot in Windows 10 Pro version 1909 with latest updates, with Kaspersky Security Cloud Free version 20.0.14.1085 installed.

The BSOD says: KMODE_EXCEPTION_NOT_HANDLED with the fault being in the driver “klkbdflt.sys”,

and after the machine has rebooted, the Kaspersky program usually comes up with “The previous application launch failed” with around 80MB of data to send each time it happens. I’ve sent the report once, and I will not sent it again.

The crash minidump is attached.

Upon further inspection in minidump analyzer tool, i have found out that the driver in question “klkbdflt.sys” is labeled version “fre-win7-amd64”. Could it be that the driver is too old to run on windows 10? it looks like that version of the driver is designed for windows 7.

How do I fix this?

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Hi @TimmSkiller,

The version of klkbdflt.sys file is 30.0.3716.0 on both my Win 10 machines. Please check the version of the file on your machine.

Next send the C:\Windows\System32\drivers\klkbdflt.sys file to me via Personal Messages.

 

In case if the OS crashes, we need to receive a full memory dump. So set the OS to collect full memory dump: https://support.kaspersky.com/common/diagnostics/12402

Next add the dump to an archive and send it to me via Personal Messages.

 

Regarding the “The previous application launch failed” message:

Do not agree with sending the data next time the issue occurs. After this: Check the C:\ProgramData\Kaspersky Lab\ folder for the files, there should be dmp files. Add these files to archive to and send to to me via Personal Messages.

 

Finally: collect a GSI report with enabled event log capturing option: https://support.kaspersky.com/common/diagnostics/3632

Also send this report to me via Personal Messages.

 

Thank you.

 

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Hi @TimmSkiller,

The version of klkbdflt.sys file is 30.0.3716.0 on both my Win 10 machines. Please check the version of the file on your machine.

Next send the C:\Windows\System32\drivers\klkbdflt.sys file to me via Personal Messages.

 

In case if the OS crashes, we need to receive a full memory dump. So set the OS to collect full memory dump: https://support.kaspersky.com/common/diagnostics/12402

Next add the dump to an archive and send it to me via Personal Messages.

 

Regarding the “The previous application launch failed” message:

Do not agree with sending the data next time the issue occurs. After this: Check the C:\ProgramData\Kaspersky Lab\ folder for the files, there should be dmp files. Add these files to archive to and send to to me via Personal Messages.

 

Finally: collect a GSI report with enabled event log capturing option: https://support.kaspersky.com/common/diagnostics/3632

Also send this report to me via Personal Messages.

 

Thank you.

 

Done. Check your Private Messages.

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Hello!

Try to remove spacedesk Windows DRIVER application via Control Panel, reboot and retest the issue.

If the issue persists, collect new memory dump and new GSI.

Thanks!
 

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