Microsoft Confirms Windows Update Failures in Restricted Networks After January 2026 Preview Update
Microsoft has confirmed that Windows Update failures in restricted network environments are caused by the January 2026 optional non-security preview update, with affected systems displaying error code 0x80010002.
Microsoft has confirmed that Windows Update failures in restricted network environments are caused by the January 2026 optional non-security preview update. The issue affects systems with limited internet access, ranging from fully isolated air-gapped systems to strictly firewalled networks, displaying error code 0x80010002 when attempting to download updates through Windows Update.
"Affected devices might be able to download the February monthly Windows security update, but then become unable to use the Windows Update settings to download Windows updates released in March, April, or later months," Microsoft said in a service alert first spotted by Microsoft MVP Susan Bradley. The company explained that the problem results from recent changes in download timeout requirements when starting download operations, and is not related to device integrity or the ability to install updates.
While Microsoft is still working to resolve this issue, IT administrators can work around it by installing one of several group policies using Known Issue Rollback (KIR), a Windows feature that reverses buggy updates delivered via Windows Update. The available KIR policies include Windows 11 26H1 KB5083806 and Windows 11 24H2, Windows 11 25H2, and Windows Server 2025 KB5083631.
"You will need to install and configure the Group Policy for your version of Windows to resolve this issue. You will also need to restart your device(s) to apply the group policy setting," Microsoft added. Admins can find further guidance on deploying and configuring KIR group policies on Microsoft's support website.
This is not the first time enterprise administrators have encountered issues with Windows updates. In April 2025, Microsoft resolved a bug preventing enterprise customers from installing the April 2025 security updates via Windows Server Update Services (WSUS). The company also fixed an almost identical issue in August 2025 that caused the Windows 11 24H2 cumulative update to fail with 0x80240069 errors when delivered via WSUS.
More recently, Microsoft shared another KIR fix for a known issue that causes the May 2026 Windows 11 security update (KB5089549) to fail to install on some systems and to trigger 0x800f0922 errors. The recurring nature of these update delivery problems highlights the complexity of maintaining reliable patching infrastructure across diverse network environments.
For organizations operating in restricted network environments, the current guidance is to apply the appropriate KIR group policy and contact Microsoft support for further assistance. Microsoft continues to investigate the root cause and is expected to release a permanent fix in a future update.