Microsoft Confirms WSUS Sync Delays and Timeout Issues

WSUS service degradation is causing longer synchronization times and timeouts across supported Windows client and server platforms, Microsoft has confirmed.

The issue primarily affects enterprise customers and IT administrators who rely on Windows Server Update Services to manage updates across organizational networks.

WSUS Synchronization Times Increase

Microsoft added the issue to its Windows Release Health dashboard on July 17.

According to the company, the problem developed over several days, with service degradation reaching its highest level around July 13.

Administrators may notice that WSUS synchronization takes significantly longer than usual. Some synchronization requests may also fail because they exceed the timeout limit.

The problem appears to originate from Microsoft’s server infrastructure rather than local WSUS configurations.

Publishing Metadata Buildup Caused the Issue

Microsoft attributed the degradation to an accumulation of publishing metadata.

The growing volume of metadata has slowed synchronization operations between WSUS servers and Microsoft’s update infrastructure.

This slowdown may delay the availability and deployment of security patches, product updates, and hotfixes across managed devices.

Microsoft Deploys Server-Side Repairs

Microsoft is carrying out server-side remediation to restore normal WSUS performance.

The company expects synchronization speeds to gradually improve as it deploys the repairs. Synchronization times should return to normal after Microsoft completes the remediation process.

Microsoft has not instructed administrators to change their local WSUS configurations while the repair work continues.

The company plans to provide another update as the situation develops.

What Windows Server Update Services Does

Windows Server Update Services allows administrators to centrally control Microsoft update distribution.

Organizations commonly use WSUS to approve, schedule, and deploy updates across large numbers of Windows devices.

A prolonged synchronization problem can delay centralized patch deployment and affect update management throughout enterprise environments.

Affected Windows Versions

The WSUS issue affects a wide range of Windows releases, from Windows 10 version 1607 up to Windows 11 version 26H1, including Windows 10 LTSC editions.

On the server side, affected versions range from Windows Server 2012 and 2012 R2 through Windows Server 2025, including Server 2016, 2019, 2022, and version 1809.

What IT Administrators Should Expect

Administrators may continue to encounter unusually slow synchronization or timeout errors until Microsoft completes the server-side repairs.

The disruption could delay update approval and distribution across managed environments. However, Microsoft has not identified any local workaround or configuration change that administrators need to apply.

In other news, Microsoft released the KB5121767 emergency update for affected Dell PCs. The company also released the KB5106056, KB5101719, and KB5099551 Dynamic Updates for Windows installation and recovery components.

Via Neowin