Microsoft has confirmed that Windows 11 Pro to Enterprise upgrade is currently broken even when using a valid subscription. Microsoft believes the issue started with the April Patch Tuesday.
Windows enterprise edition RSS
Recently, sysadmins discovered that Microsoft had automatically installed Windows Backup on enterprise PCs which came across as an annoyance for some. The tech giant promises a workaround soon.
Microsoft will add a new Windows stand alone SKU for anyone to purchase starting March 1st. The Windows Enterprise Edition was previously available only via a Software Assurance subscription.