VM instance inaccessible - help

Question

My virtual machine keeps locking us out and forcing us to restart the whole system. As of right now, even restarting will not work and I am completely locked out of my VM.

When logging in, through windows remote desktop connection I get error "an internal error has occurred" Azure Twitter sent me an article about RDP, which my test failed. the fix was suggested to open a power shell as step 1, but I can't even get into the VM to do this.

the VM is accessed from multiple locations as i travel often and have a developer in Pakistan. which from this article, might be the issue?

very frustrated and no idea what to do.

Answer 1

Hi @Adam Marc ,

If you're able to access the Virtual Machine after a restart but the VM eventually gives a connection error "An Internal Error has occurred" - Typically this means the RDP manager is too burdened to accept new requests. This can happen if the Virtual Machine is open to the public and not properly secure.

If your Virtual Machine is open to the public, please make sure to set your Network Security Group to only allow specific IP Addresses, possibly change the Port of the RDP, or set 'Just-in-Time' access to the VM. https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/troubleshoot-rdp-internal-error

If the Virtual Machine is still experiencing "An Internal Error" after securing the Network Security Group and restarting the machine, then you may need to repair the RDP Certificate by Serial Console, or pulling the VM Offline for repair. The scripts to run are provided in the above documentation.

I hope this helps!

Answer 2

Try resetting the RDP settings completely and observe.

https://learn.microsoft.com/en-us/troubleshoot/azure/virtual-machines/reset-rdp

Are you seeing any more errors\warnings in event log when you get a chance to login initially. there are chance some application might disturb the RDP profilers.