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WU_S_DM_ALREADYDOWNLOADING
WU_S_DM_ALREADYDOWNLOADING is a success-status code. It means a download for the update already exists, so Windows Update did not create a duplicate transfer.
What to do
- Query the existing download operation or wait for it to complete instead of starting parallel downloads.
- Check whether a previous update session, service restart, or management tool owns the active transfer.
- If progress remains stalled, investigate the underlying download-manager or transport errors rather than this status itself.
Microsoft: Searching, downloading, and installing updates
Microsoft: Windows Update Agent API reference
Microsoft: Windows Update error reference
Looking for a different code? Search another status or error code.