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Windows Server 2012 known issues

Microsoft lists 2 open issues for Windows Server 2012. Below is every issue Microsoft has listed for this version, with the update that caused it and when it was resolved.

IssueStatusCaused byOpenedResolved or updated
SQL Server linked server connections might remain openConfirmedKB5126835, 2026-10-1311 November 202611 November 2026
Certain operations performed on a Cluster Shared Volume may failMitigatedKB4480975, 2019-01-088 January 201911 June 2020
USB audio devices might fail to start or produce no soundResolved KB5135580KB5123065, 2026-09-0810 November 20267 November 2026
Remote Desktop Services might stop responding after Sept. 2026 security updateResolved KB5129244KB5123065, 2026-09-0811 September 202614 September 2026
Incorrect notifications that "Microsoft Defender Antivirus is turned off"Resolved–28 August 202630 September 2026
Windows Server Update Services sync operations might have issues or time outResolved–18 July 202620 July 2026
Deleting a file from the Recycle Bin displays an internal filename in the dialogResolved KB5099445KB5094042, 2026-06-0918 June 202614 July 2026
Message Queuing (MSMQ) might fail with the December 2025 Windows security updateResolved KB5074980KB5071505, 2025-12-0913 December 202518 December 2025

Source: Microsoft's release health page for Windows Server 2012. Dates are in UTC.

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