Cannot connect to Azure VM.

Question

Cannot connect to Azure VM.

Valeriy Zastavnyuk 20 Microsoft Employee

We cannot connect to an Azure VM through RDP though it is fully functional. We are using Dynamics 365 running on it. And Test-NetConnection command from PS succeeded.

0 comments

Answer accepted by question author

Andreas Baumgarten 132.9K MVP Volunteer Moderator

Hi @Valeriy Zastavnyuk ,

there are 2 good troubleshooting guides available with step-by-step instructions:

Troubleshoot Remote Desktop connections to an Azure virtual machine

Detailed troubleshooting steps for remote desktop connection issues to Windows VMs in Azure

I most cases the issues are related to NSG rule configuration or routing.

(If the reply was helpful please don't forget to upvote and/or accept as answer, thank you)

Regards

Andreas Baumgarten

0 comments

2 additional answers

Your answer

Answer 1

Thank you Andreas. You suggestion was right and I was able to find and fix the issue and connect to the VM. I found the straightforward way to diagnose what exactly blocks the connection.

Open Azure Portal;
Find and open 'Network Watcher'
Go to IP 'flow verify'
In 'Remote IP' address put Ipv4 address of your computer you are connecting from
In 'Remote port' put the port which is open for listening on out machine. It can be found by running cmd command
netstat -an | findstr LISTENING
Click "Verify IP flow"

In the response window it shows an exact name of NSG rule which clocks the connection.

Answer 2

Thank you Andreas. You suggestion was right and I was able to find and fix the issue and connect to the VM. I found the straightforward way to diagnose what exactly blocks the connection.

Open Azure Portal;
Find and open 'Network Watcher'
Go to IP 'flow verify'
In 'Remote IP' address put Ipv4 address of your computer you are connecting from
In 'Remote port' put the port which is open for listening on out machine. It can be found by running cmd command
netstat -an | findstr LISTENING
Click "Verify IP flow"

In the response window it shows an exact name of NSG rule which clocks the connection.