Hi, I was still getting the error and was unable to complete the VHD export through the browser as indicated in the steps here: https://learn.microsoft.com/en-us/azure/virtual-machines/windows/download-vhd
However, I was able to work around the problem by using the Azure Storage Explorer and downloading the VHD of the osdisk from there - which completed successfully. The Azure Storage Explorer client handled it great.
Thanks!