NLA can cause connectivity issues if the client and host have mismatched security standards.
Microsoft frequently rolls out stability patches for Remote Desktop Services. Ensure both the local machine and remote host are running the latest Windows updates.
Once you have resolved the error, a few preventative configurations can stop it from returning:
Network Level Authentication (NLA) or encryption mismatches time out the session. Step-by-Step Solutions to Fix Error 0x904 i remote desktop connection error code 0x904 better
✅ – For business environments, an RD Gateway handles SSL certificates centrally, and clients never see raw error 0x904.
| Old / Common Advice | Better Approach (from this guide) | |---------------------|------------------------------------| | Restart both PCs | Modify CredSSP registry key | | Disable firewall | Force RDP Security Layer | | Reinstall Windows | Clear RDP licensing cache | | Ignore and retry | Use Group Policy Oracle Remediation | | Use a different remote tool | Keep CredSSP patches synced |
If Microsoft RDC continues failing, try: NLA can cause connectivity issues if the client
Then, after regaining access, re-run the certificate repair from within the session.
(Solutions can vary slightly for Azure VMs .)
Remote Desktop Connection (RDC) is a vital tool for many professionals, allowing them to access and control a remote computer from another location. However, users often encounter errors that hinder their ability to establish a successful connection. One such error is the RDC error code 0x904. This paper aims to provide an in-depth analysis of the error code 0x904, its causes, and effective solutions to resolve the issue. Once you have resolved the error, a few
Under the Remote Desktop section, locate the checkbox that reads: “Allow connections only from computers running Remote Desktop with Network Level Authentication (recommended)” . this box to test if NLA is the culprit. Click Apply and OK .
Use this checklist to rule out simple, one-click issues. Even advanced users skip these steps sometimes.
By adjusting your network adapter's power settings and utilizing Group Policy keep-alives, you can eliminate the underlying timeouts that cause Error 0x904 and enjoy an uninterrupted remote desktop experience.
Log into your router’s admin dashboard via your web browser (usually by typing the Default Gateway IP into the URL bar).