klbackupdisk.sys
Kaspersky — Kaspersky backup disk driver
When blamed in a crash: Very likely the true cause
What to do
Part of Kaspersky's product suite — same treatment as klif.sys.
- Update Kaspersky; if crashes persist, clean-reinstall with kavremover.
Official download (the vendor's own site — never use third-party "driver download" sites):
https://support.kaspersky.com/
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