Why can't I associate my NSGs to a NIC or subnet?

Question

I am facing a strange issue where I am not able to assign a NSG to a virtual network or NIC even though they are in the same resource group, same subscription and the same location. Trying to link from either the NSG, VN or NIC does not show the other resource in the drop down.

NSG:

VN:

NIC:

When I try to link from the NSG, I do not see the NIC in the dropdown.

It is the same when I try to search from NIC.

Am I missing something here?

Answer 1

@Boni Shah ,

Thanks for the info.

• Are you the owner of the subscription?
• Or do you have a different role or a custom role in this subscription?
• Please check it at the Resource Group level once. See : https://learn.microsoft.com/en-us/azure/role-based-access-control/check-access#step-3-check-your-access
• I see you are using East US Region, can you please try it with a different region?
• I tried to repo this in East US but I was not able to (I also tried with Central India but I was not able to repo your issue)
• 
• Are you using a preview portal of Azure? If so, please use the normal portal : https://portal.azure.com/?preview=no If not, try using preview portal : https://preview.portal.azure.com/
• In addition to the above, you can also use : http://portal.azure.com/?feature.canmodifystamps=true&Microsoft_Azure_Compute=flight1

Let me know how this goes.

Cheers,

Kapil.

Answer 2

Hi @Boni Shah

At first I don't see anything wrong with your settings

Ensure the NSG you want to associate is in a valid state and not pending deletion or in a state of transition.

It is possible that this could be a bug within the Azure portal. Trying a different browser or clearing your browser cache could potentially resolve the issue if it's related to a session or cache problem.

You can try use Azure CLI to assign the NSG to the NIC:

az network nic update --name NIC1 --resource-group YourResourceGroup --network-security-group NSG1

Get in touch if you need more help with this issue.

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