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SCHED_E_INVALID_TASK_HASH
It is an integrity warning about the registered task definition, not a normal action failure that should be handled by retrying the command.
Preserve evidence first
- Record the task path, registration source, timestamps, relevant Task Scheduler operational events, and a copy of the current definition before replacing it.
- Compare the registered XML and security context with the expected deployment artifact or management baseline.
- Investigate unexpected writers such as installers, management agents, malware, failed restores, or manual edits before assuming a random file-system fault.
Recover from a trusted source
After the cause is understood, re-register the task from a known-good definition and verify its principal, triggers, settings, and action. Do not continue to run a task whose integrity warning has been ignored; the configuration controls when and under which identity code executes.
Microsoft: Task Scheduler status codes · Microsoft: RegisterTaskDefinition · Microsoft: Task Scheduler schema
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