Couldn't connect to Azure VM after TLS Registry Change

Question

Hi There,

Today, I disabled the TLS 1.0 and 1.1 access by editing the registry. When I did it, I inadvertently disabled TLS 1.2 too. Now, I cannot connect to VM since I'm getting "an internal error has occurred". Also, the website which is hosted in the VM is not responding. I'm not sure if it's because I disabled TLS 1.2. If so, can you please help how to get around this issue to gain back the access.

Answer 1

Hi,

In the Azure portal, you can may <yourVM> -- Operations -- Run command -- RunPowerShellScript to run powershell command(s) to change the registry setting(s) so that TLS 1.2 is enabled again.

Another method is to use Azure Serial console to connect and run PowerShell or other commands to view/edit the registry:

Azure Serial Console for Windows

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/serial-console-windows

Emergency Management Services Tools and Settings

https://learn.microsoft.com/en-us/previous-versions/windows/it-pro/windows-server-2003/cc787940(v=ws.10)

If the above is helpful please click Accept Answer.

Thanks.

-TP