How to Fix Remote Desktop Gateway Server is temporarily unavailable [Steps]

What is ‘Remote Desktop Gateway Server is temporarily unavailable’ error in Windows 10?

If you are facing ‘Remote Desktop Gateway Server is temporarily unavailable’ error on Windows 10 computer when your computer fails to connect to the remote computer, then you are in right-place for the solution. Here, you are provided with easy steps/methods to resolve the issue. Let’s starts the discussion.

‘Remote Desktop Gateway Server is temporarily unavailable’ error:

‘Remote Desktop Gateway Server’: Remote Desktop Gateway Server is a Windows 2008R2 server which is typically located in a corporate or private network. Remote Desktop Gateway Server acts as the gateway into which RDP connections from an external network connects through to access a Remote Desktop Server located on corporate or private network.

Typically, Remote Desktop Servers uses port 3389 and to enable it over the internet, you must enable/forward TCP Port 3389 to Remote Desktop Server. With Remote Desktop Gateway installed, you can provide your clients the address or DNS name of the Remote Desktop Gateway Server. Give them the name or private IP address of Remote Desktop Server that you want your client to connect to. You are also allowed to create groupings of servers and allow only certain Windows users ore groups access to particular servers.

However, several users/ Remote Desktop Gateway clients reported they faced ‘Remote Desktop Gateway Server is temporarily unavailable’ error on their Windows 10/8/7 computer when their Windows computer fails to connect to Remote Desktop Gateway Server. There could be several reasons behind the issue including the malware or viruses infections in computer, port 443 is used by more than one site, issue with SSL Certificate of that sites, issue with DNS server and IP settings, and other issues.

This issue can be occurred if port 443 is used by more than one site. Removing the invalid site finding from IIS manager can resolve the issue. Also, SSL certificate verification is necessary and check if it is not expired. It is possible to fix the issue with our instructions. Let’s go for the solution.

How to fix Remote Desktop Gateway Server is temporarily unavailable in Windows 10?

Method 1: Fix Remote Desktop Gateway Server is temporarily unavailable error with ‘PC Repair Tool’

‘PC Repair Tool’ is easy & quick way to find and fix BSOD errors, DLL errors, EXE errors, problems with programs/applications, malware or viruses infections in computer, system files or registry issues, and other system issues with just few clicks.

⇓ Get PC Repair Tool

Method 2: Fix Remote Desktop Gateway Server is temporarily unavailable error by changing registry value

Step 1: Press ‘Windows + R’ keys on keyboard, type ‘regedit’ in ‘Run’ window and hit ‘Ok’ button to open ‘Registry Editor’ app

HKEY_CURRENT_USER\\Software\\Microsoft

Step 2: Right-click on ‘Microsoft’ in left pane and select ‘New > Key’ and name the key to ‘Terminal Services Client’

Step 3: Right-click on newly created registry key and select ‘New > DWORD (32-bit) Value’ and name it to ‘RDGClientTransport’

Step 4: Double-click on newly created value to edit, set it value data to ‘1’, and hit ‘Ok’ button to save the changes. Once done, restart your computer and check if the issue is resolved.

Method 3: Disable Windows Firewall

Interference of Windows Firewall could be reason behind the issue. You can disable Windows Firewall in computer in order to fix.

Step 1: Open ‘Settings’ App in Windows PC via Windows Search Box and go to ‘Network & Internet > Proxy’ and make sure all settings are disabled

Step 2: Now, type ‘Windows Defender Firewall’ in Windows Search Box and open it from results appear

Step 3: Select ‘Turn Windows Defender Firewall ON or OFF’ and choose ‘Turn OFF Windows Defender Firewall’ option next to ‘Private’ and ‘Public’ network settings, and then hit ‘OK’ button to save the changes and check if it works for you.

Method 4: Verify the correct IP

Step 1: Create the same internet FQDN in your local DNS record. You can access RemoteApp via the same rdweb internally and externally.

Step 2: Keep TCP Port 443 and UDP port 3391 open. The packets from client computer in other domain must make it to Remote Desktop Gateway.

Step 3: Verify that FQDN for Remote Desktop Gateway Server resolves to properly IP address

Step 4: Run a wireshark or netmon capture on Remote Desktop Gateway Server when you want to connect

Step 5: You can also create a forward zone for Remote Desktop services domain over your domain and then create DNS records that are necessary for FQDN.

Method 5: Check the website Bindings to port 443

Step 1: Open ‘IIS Manager’ in Windows PC via Windows Search Box

Step 2: Go to ‘Default Web Site’ and open ‘Site Bindings’ on right-side and remove the invalid binding.

Method 6: Check the SSL certificate

Remote Desktop Gateway (RDG) uses SSL certificate to securely encrypt the connection. Configurations of your host like Cloudflare, etc can mess your SSL Certificate up. So, you should check SSL certiticate and also make sure it is not expired because issue with SSL certificate can cause Remote Desktop Gateway Server connection issue.

Conclusion

I am sure this article helped you on How to fix Remote Desktop Gateway Server is temporarily unavailable error in Windows 10 with easy ways. You can read & follow our instructions to do so. That’s all. For any suggestions or queries, please write on comment box below.

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