Some VM Sizes Unavailable in Azure: What You Need to Know

Some VM sizes in Azure can be unavailable due to various reasons, including resource constraints and maintenance.

Resource constraints are a common reason for unavailability, as Azure may not have enough resources to support a particular VM size.

Azure also performs maintenance on its resources, which can cause VM sizes to be unavailable during these periods.

VM sizes may be unavailable in specific regions, such as the B-Series in the East US region.

Broaden your view: Azure Disk Sizes

If you're unable to create a VM due to unavailable size options, it's likely that your subscription is not suitable for VM creation.

In some cases, your subscription status may be active, but you still can't create a VM.

Pay As You Go subscriptions can be affected by this issue, as seen in a reported case where a user with an active Pay As You Go subscription couldn't create a VM in the Canada East region.

Changing the region might not resolve the issue, as the user in the reported case tried switching to five different regions, including US Central, US East, and US East 2, but still couldn't see the size options.

Even changing the VM image might not help, as the user in the reported case tried switching to Ubuntu, but still encountered the same issue.

If you're experiencing this problem, try checking your subscription type and status to see if it's the cause of the issue.

For more insights, see: Azure Vm Increase Disk Size

Azure VM size availability can be a frustrating issue, especially when you're trying to deploy a VM.

The first step to troubleshoot is to check if the VM size is available in your region. You can do this by running the command `az vm list-skus --location centralus --size Standard_D --all --output table` as suggested by Microsoft Employee kobulloc-MSFT.

If the VM size is not available, you can try submitting a SKU request to Azure Support. It's also worth noting that some VM sizes may not be available due to capacity restrictions or limitations on your subscription.

To check the availability of VM sizes in your region, you can use the `az vm list-skus` command. You can also use the `--all` flag to list all available VM sizes in your region.

Here are some common reasons why VM sizes may not be available:

It's worth noting that some popular VM sizes may not be available due to high demand or capacity restrictions. In this case, you may need to choose a different VM size or location.