The Remote Desktop connection error 0x904 (Extended Error Code: 0x7) is a common RDP issue that typically indicates a network connection failure security certificate problem
Here is a review of the error, its causes, and the best methods to resolve it.
Then try connecting.
The #1 fix for 0x904 + 0x7 is deleting the MSLicensing registry key (fix #1 above).
If that fails, force RDP security layer to "RDP" (not SSL/CredSSP) and restart services on the remote machine.
On the remote machine (requires local or manual access): The Remote Desktop connection error 0x904 (Extended Error
Corrupted password caches often trigger extended error 0x7.
This error is frequently triggered by insufficient bandwidth or packet loss. If that fails, force RDP security layer to
If you continue to experience the error, consider migrating to a different RDP client (like RoyalTS or Devolutions Remote Desktop Manager) for a fresh connection stack. But in 99% of cases, Fix #1 and Fix #2 are all you will ever need.
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