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WU_E_UH_INVALID_TARGETSESSION
WU_E_UH_INVALID_TARGETSESSION means the handler expected to target a particular user or system session, but the session information it received was not valid.
What this often points to for WU_E_UH_INVALID_TARGETSESSION
- Per-user or AppX-style update content being applied in the wrong context.
- Deployment tooling that lost the user-session association before install.
- A stale target session after logoff, reboot, or service restart.
Microsoft: Modern, Inbox, and Microsoft Store apps troubleshooting
Microsoft: Windows Update log files
Microsoft: Windows Update error reference
Diagnostic interpretation
This result has the HRESULT value 0x8024201B. AllStat records the condition as “The targeted session for install is invalid.”.
Evidence to capture
- Capture any IErrorInfo text, activity identifier, event-log entry, and subsystem trace that mentions this result or the wu / uh / targetsession operation.
- compare the failing machine with a working one at the same configuration boundary: component version, policy, registration, identity, and target resource.
Retry and recovery
” has changed.
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