Unable to access azure vm via ssh

Question

Unable to access azure vm via ssh

Steve Fisher 40

Cant connect via ssh to my linux box on azure
port 22 has a bypass rule set up in nsg for my ip i have used it in the past from multiple machines, i have tried from 2 today and i can not connect. the check access in azure portal is failing
Connection prerequisites

VM access__

Port 22 is not accessible from source IP(s) View blocking NSG rules

SSH command

I have redeployed the machine and can still not connect via ssh the troubleshooter found no issues

Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-09T16:06:43.0433333+00:00

Hello Steve Fisher

The issue seems to be that the port 22 is not accessible from you source machine.

Please ensure that there is an inbound NSG rule for your source machine IP address.

(for example, you are trying to SSH to the VM from a Windows PC, you have to add the IP address of the Windows PC as Source).

If the above suggestion doesn't work and to rule out VM issues, please make the source IP as Any (so that it allows any IP address to SSH to the VM).

Reference: https://learn.microsoft.com/en-us/azure/virtual-machines/linux-vm-connect?tabs=Linux

Let me know if this helps to fix the connectivity issue!!
Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-09T16:09:56.0666667+00:00

Additionally, I've asked few PII data related queries, please review and answer them.
Steve Fisher 40 Reputation points

2025-10-09T16:53:52.0433333+00:00

apparently you did not read the whole post because these are already answered in the initial question,
port 22 has a bypass rule set up in nsg for my ip

but i get this message when i run check access in the connect section

and yes my ip address and my office ip address and one other ip address are set in the ssh rule
Andreas Baumgarten 129.5K Reputation points MVP Volunteer Moderator

2025-10-09T17:48:45.3+00:00

Hi @Steve Fisher ,

what do you see if you click on View blocking NSG rules?
NSGs can be associated with the NIC of the VM and with the subnet of the virtual network.

If you have NSGs associated with NIC and subnet both NSGs require an SSH inbound allow rule.

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

Regards

Andreas Baumgarten
Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-14T16:19:36.6466667+00:00

Hello Steve Fisher,

Just checking in if the suggestions shared over the private message helped you unblock from doing SSH to the VM.

1 answer

Your answer

Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-09T16:06:43.0433333+00:00

Hello Steve Fisher

The issue seems to be that the port 22 is not accessible from you source machine.

Please ensure that there is an inbound NSG rule for your source machine IP address.

(for example, you are trying to SSH to the VM from a Windows PC, you have to add the IP address of the Windows PC as Source).

If the above suggestion doesn't work and to rule out VM issues, please make the source IP as Any (so that it allows any IP address to SSH to the VM).

Reference: https://learn.microsoft.com/en-us/azure/virtual-machines/linux-vm-connect?tabs=Linux

Let me know if this helps to fix the connectivity issue!!
Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-09T16:09:56.0666667+00:00

Additionally, I've asked few PII data related queries, please review and answer them.
Steve Fisher 40 Reputation points

2025-10-09T16:53:52.0433333+00:00

apparently you did not read the whole post because these are already answered in the initial question,
port 22 has a bypass rule set up in nsg for my ip

but i get this message when i run check access in the connect section

and yes my ip address and my office ip address and one other ip address are set in the ssh rule
Andreas Baumgarten 129.5K Reputation points MVP Volunteer Moderator

2025-10-09T17:48:45.3+00:00

Hi @Steve Fisher ,

what do you see if you click on View blocking NSG rules?
NSGs can be associated with the NIC of the VM and with the subnet of the virtual network.

If you have NSGs associated with NIC and subnet both NSGs require an SSH inbound allow rule.

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

Regards

Andreas Baumgarten
Ankit Yadav 6,990 Reputation points Microsoft External Staff Moderator

2025-10-14T16:19:36.6466667+00:00

Hello Steve Fisher,

Just checking in if the suggestions shared over the private message helped you unblock from doing SSH to the VM.

Answer 1

Cause: The issue occurred due to an unknown configuration or transient error that prevented successful SSH connections on port 22 despite the proper NSG bypass rule and previous successful access. The connection test in the Azure portal was failing, indicating that port 22 was blocked from the source IP.

Resolution: The issue was resolved after the customer changed the VM password several times. This action might have triggered a reset or corrected a possible authentication-related anomaly, allowing SSH access to be restored.

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Unable to access azure vm via ssh

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