Microsoft suspended serving Windows 8.1 Update to businesses that rely on WSUS (Windows Server Update Services), saying that a bug would prevent devices from recognizing future updates.



From Computerworld:

WSUS is Microsoft's standard corporate update service and is used by IT staffs to manage the distribution of bug fixes, security patches and other updates to Windows devices on a company's network.

"There is a known issue which causes some PCs updated with the Windows 8.1 Update to stop scanning against Windows Server Update Services 3.0 Service Pack 2 (WSUS 3.0 SP2 or WSUS 3.2) servers which are configured to use SSL and have not enabled TLS 1.2," Microsoft wrote on its WSUS blog.

  Microsoft suspends Windows 8.1 Update release to businesses