Problem Description

Backup of the clustered virtual machine will queue indefinitely, or fail with the backup window has expired.

Cause

One or more network interface/s are configured on the Hyper-V host with a gateway that cannot reach the internet.

Example network type: Closed iSCSI network for storage

Resolution

Remove the gateway or alter the network interface binding order so the proper network interface is first.
Please refer to Microsoft documentation for the specific Server OS version.
Configure the Order of Network Interfaces

Verification

Test the connection to the Druva cloud by using the following command from Windows PowerShell: Test-NetConnection backup-phoenix.druva.com -p 443
Verify the test is successful, and the correct source address is used.

Example of a successful connection:

Clustered Hyper-V Backups Queue Indefinitely