A configuration problem with the Windows 8.1 update has arisen that results in preventing all future updates from being downloaded from the Windows update service.
Microsoft has continued the rollout, but enterprise users are being prevented from downloading the update if they meet criteria likely to trigger the bug.
The problem occurs if the Windows Server Update Service (WSUS) version 3.2 is scanned by machines running Windows Server via HTTPS using SSL and the latest Transport Layer Socket (TLS) 1.2 is not enabled at server level.
Although this sounds like a complicated set of criteria, it is in fact surprisingly likely in small to medium-sized business environments, and network administrators are advised to be wary.
The workarounds is simple - enable TLS 1.2 or disable HTTPs on WSUS while Microsoft prepares a fix for the problem, which is on the way. However, a post on Microsoft Technet advises, "We recommend that you suspend deployment of this update in your organisation until we release the update that resolves this issue."
In the meantime, any administrators who understand how to avoid the problem and wish to proceed can download the update manually from MSDN or the Windows Update Catalogue.
Here at The INQUIRER, we downloaded the Windows 8.1 update and were instantly locked out of our user profiles, but it turned out that three reboots was the charm for that particular glitch. µ