Frequently asked question about Windows Virtual Machines

All subscribers can run server software on an Azure virtual machine. For information about the support policy for running Microsoft server software in Azure, see Microsoft server software support for Azure Virtual Machines.

Certain versions of Windows 7, Windows 8.1, and Windows 10 are available to MSDN Azure benefit subscribers and MSDN Dev and Test Pay-As-You-Go subscribers, for development and test tasks. For details, including instructions and limitations, see Windows Client images for MSDN subscribers.

Each data disk can be up to 32,767 GiB. The number of data disks you can use depends on the size of the virtual machine. For details, see Sizes for Virtual Machines.

Azure Managed Disks are the recommended disk storage offerings for use with Azure Virtual Machines for persistent storage of data. You can use multiple Managed Disks with each Virtual Machine. Managed Disks offer two types of durable storage options: Premium and Standard Managed Disks. For pricing information, see Managed Disks Pricing.

Azure storage accounts can also provide storage for the operating system disk and any data disks. Each disk is a .vhd file stored as a page blob. For pricing details, see Storage Pricing Details.

Establish a remote connection using Remote Desktop Connection (RDP) for a Windows VM. For instructions, see How to connect and sign on to an Azure virtual machine running Windows. A maximum of two concurrent connections are supported, unless the server is configured as a Remote Desktop Services session host.

If you're having problems with Remote Desktop, see Troubleshoot Remote Desktop connections to a Windows-based Azure Virtual Machine.

If you're familiar with Hyper-V, you might be looking for a tool similar to VMConnect. Azure doesn't offer a similar tool because console access to a virtual machine isn't supported.

Don't use the temporary disk to store data. It is only temporary storage, so you would risk losing data that can't be recovered. Data loss can occur when the virtual machine moves to a different host. Resizing a virtual machine, updating the host, or a hardware failure on the host are some of the reasons a virtual machine might move.

If you have an application that needs to use the D: drive letter, you can reassign drive letters so that the temporary disk uses something other than D:. For instructions, see Change the drive letter of the Windows temporary disk.

You can change the drive letter by moving the page file and reassigning drive letters, but you need to make sure you do the steps in a specific order. For instructions, see Change the drive letter of the Windows temporary disk.

No. If you want your VM to be part of an availability set, you need to create the VM within the set. There currently isn't a way to add a VM to an availability set after it has been created.

Yes. For instructions, see Migrating on-premises VMs to Azure.

Yes. For instructions, see How to expand the OS drive of a Virtual Machine in an Azure Resource Group.

Yes. Using managed images, you can create an image of a virtual machine and then use the image to build multiple new VMs. For instructions, see Create a custom image of a VM.

Yes. To quickly create a Linux VM to try out, see Create a Linux VM on Azure using the Portal.

Yes, this is now possible. The VM first needs to be stopped deallocated. Then you can add or remove a NIC (unless it's the last NIC on the VM).

Yes. The computer name can be a maximum of 15 characters in length.

Yes. The resource group name can be a maximum of 90 characters in length.

Usernames can be a maximum of 20 characters in length and cannot end in a period (".").

The following usernames are not allowed:

• 1
• 123
• a
• actuser
• adm
• admin
• admin1
• admin2
• administrator
• aspnet
• backup
• console
• david
• guest
• john
• owner
• root
• server
• sql
• support_388945a0
• support
• sys
• test
• test1
• test2
• test3
• user
• user1
• user2
• video

There are varying password length requirements, depending on the tool you are using:

• Azure portal - between 12 - 123 characters
• Azure PowerShell - between 8 - 123 characters
• Azure CLI - between 12 - 123

• Have lower characters
• Have upper characters
• Have a digit
• Have a special character (Regex match [\W_])

The following passwords are not allowed:

For additional information and restrictions for password creation reference this password guidance documentation.