Windows 11 users sometimes encounter the error message The task image is corrupt or has been tampered with. (0x80041321)
when using Task Scheduler or running system backups. This error signals that one or more scheduled task definitions have become unreadable or damaged, often following failed updates, manual changes, or system migrations. As a result, scheduled tasks may fail to run, and backup operations can be blocked, disrupting system maintenance and data protection routines.
The most effective way to resolve this issue is to identify and delete the corrupted task files directly from the system folders, then recreate any essential tasks.