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WU_S_ALREADY_INSTALLED
What WU_S_ALREADY_INSTALLED means
WU_S_ALREADY_INSTALLED (0x00240006) is a Windows Update success status. It means the update requested for installation is already installed on the target system, so Windows Update does not need to install the same update again.
Why this status matters
This result is different from an installation failure. The requested end state is already satisfied. A caller that treats every nonzero Windows Update code as an error can incorrectly retry installation, clear caches, or start unnecessary repair work.
What to verify
- Confirm the update identity, revision, and target product match the update the caller intended to install.
- Check the installed-state and applicability result for that exact update rather than relying only on a display title.
- If the caller expected a newer package, compare revision and supersedence information before deciding that Windows Update selected the wrong item.
- Keep the Windows Update operation and activity identifiers when tracing an unexpected result through WindowsUpdate.log or ETW.
How to handle it
Normally no repair or rollback is required. Treat the requested update as already present and continue the workflow. Investigate further only when the application expected a different revision or when the installed-state information conflicts with the package actually required.
Official references
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