If the machine you are trying to reach is on a local network (not the cloud), this error can happen if NLA settings are mismatched.
To disable NLA requirement via Group Policy (On the Host):
Note: Disabling NLA reduces security and should only be done for troubleshooting purposes or within secure private networks.
The remote desktop connection error code 0x904 extended error code 0x7 is undeniably annoying, but it is rarely a death sentence for your remote access. The best course of action is methodical:
Remember, extended error code 0x7 is your friend – it tells you the remote computer slammed the door due to a licensing or cache problem. By following the solutions in this article, you will resolve the issue permanently and get back to productive remote work. If the machine you are trying to reach
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.
Keywords integrated: remote desktop connection error code 0x904 extended error code 0x7 best
Since the phrase "best" at the end of your request suggests you are looking for a solution or a guide on how to interpret this error, I have written a technical review and guide regarding this specific error code combination.
Here is a review of the error, its causes, and the best methods to resolve it. Note: Disabling NLA reduces security and should only
Run these on the client (as Admin) to capture detailed logs:
# Clear all existing RDP connections net stop "Remote Desktop Services" /y del /q %userprofile%\Documents\Default.rdp del /q %localappdata%\Microsoft\Terminal Server Client\Cache\*.*
mstsc.exe /v:YourServerIP /restrictedAdmin
The
/restrictedAdminflag bypasses credential delegation and often bypasses license negotiation errors completely (Windows 8.1/Server 2012 R2 and later). The remote desktop connection error code 0x904 extended
When facing error code 0x904 extended error code 0x7, users often waste time on irrelevant actions. Avoid these:
Microsoft’s CredSSP update (KB4093120 and later) is the primary reason for error 0x7 on post-2018 systems.
On the remote server (or your office PC):
On the local client:
Alternative (if you manage the server but cannot update the client):