STOP 0x000000F5

FLTMGR_FILE_SYSTEM

Windows' filter manager — the layer that lets antivirus and backup tools watch file activity — hit an unrecoverable error. Usually a buggy filter driver from security or backup software.

Likely causes, most common first

Antivirus or backup filter drivers
Cloud-sync filter drivers

How to fix it

1. Update or remove filter-driver software easy

Update third-party antivirus/backup/cloud-sync software.
If crashes persist, uninstall them one at a time to find the offender.

The four parameters on the blue screen

Windows shows four hex numbers with this stop code. Here's what each means — our analyzer decodes them automatically from your dump file.

Parameter 1	Subtype of the failure
Parameter 2	Varies
Parameter 3	Varies
Parameter 4	Varies

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