Hello @exchange beginner
Thank you for posting in Q & A forum.
You can use Azure Storage Explorer to upload a VHD file to a storage account Or Upload an image using PowerShell. After you upload your VHD file, you can create a custom image from the uploaded VHD file and use the image to provision a virtual machine.
Follow steps- Upload a VHD file to a storage account by using Storage Explorer Or PowerShell
If this answers your query, do click Accept Answer
and Up-Vote for the same. And, if you have any further query do let us know.