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Known update issues

Known issues after updates

What stops working after updates from Windows, Microsoft 365, Exchange, VMware, Veeam and other major vendors – with status, workaround and fix, continuously from the vendors’ official sources, complemented by reports from forums and the community and by targeted web research. Anything the vendor has not confirmed yet is labelled as a community report.

Sources last checked: 1 Nov 2026, 20:49

66 entries

FixedKnown issueCommunity report

Windows 11: Always On VPN failures from September updates fixed in KB5127936

Always On VPN profiles with automatic protocol selection or fallback (IKEv2 and SSTP) failed after the September 2026 Windows 11 updates. According to secondary sources and research notes, the optional preview update KB5127936 (28 Oct 2026) fixes this. We could not read the vendor page ourselves, so the details are not yet confirmed by a vendor source here.

Microsoft · Windows 11

OpenKnown issueCommunity report

Windows 11 25H2: Adding shared printer via "Add device" fails with error 87

Users report that adding a shared printer from a Windows Server via Settings > Add device fails with error 87 on Windows 11 25H2 after update KB5127648. This is reported by users, not yet confirmed by the vendor. Only one independent source has been found so far.

Microsoft · Windows 11 25H2 with printers shared from Windows Server

OpenKnown issueCommunity report

Windows 11/Server 2025: USB Audio Class 1.0 devices fail (Code 10) or give no sound

USB Audio Class 1.0 devices reportedly fail with Code 10 or produce no sound on Windows 11 and Windows Server 2025. This is reported by users, not yet confirmed by the vendor. No permanent fix has been found; a third-party page claims the Windows Server 2022 update KB5126655 fixes it, which is unverified.

Microsoft · Windows Server 2025, Windows 11 26H2/25H2/24H2, Windows Server 2019

WorkaroundKnown issue

Windows Autopilot: Hybrid join pre-provisioning fails if policy conflict needs a domain controller

During Windows Autopilot pre-provisioning for Microsoft Entra hybrid join, the technician flow can fail when an assigned policy needs a domain controller to resolve a policy conflict. Microsoft describes this as a known limitation and expected behavior when the device has no line-of-sight to a domain controller. Microsoft documents ways to avoid it.

Microsoft · Windows Autopilot

WorkaroundKnown issue

Outlook: Public holiday calendars miss dates after June 2026 and for 2027

Microsoft confirms that Outlook public holiday calendars may lack holiday entries for the second half of 2026 and for 2027. This affects Outlook on the web, new Outlook for Windows, classic Outlook for Windows and other clients using Microsoft's holiday data. Microsoft is investigating reports from several regions; an alternative holiday source is suggested as a workaround.

Microsoft · Outlook

WorkaroundKnown issue

Windows Autopilot: existing devices show disabled OOBE screens with ConfigMgr Sysprep

During a Windows Autopilot for existing devices deployment, screens that are disabled in the Autopilot profile are still shown. Windows deletes AutopilotConfigurationFile.json when Sysprep.exe runs with /Generalize, which the Configuration Manager step Prepare Windows for Capture does. Microsoft documents a workaround.

Microsoft · Windows Autopilot

WorkaroundKnown issue

Windows Autopilot: TPM attestation not working on Intel Tiger Lake platforms

Microsoft documents that TPM (Trusted Platform Module) attestation on Intel firmware TPM Tiger Lake devices requires a minimum update level of Windows 10, version 21H2. Older Windows versions are not supported, so attestation does not work there. The requirement is to install KB5007253 or later.

Microsoft · Windows Autopilot

OpenKnown issue

Windows Autopilot: HTML tags from company branding shown on sign-in page

When customizations are applied to the company branding settings, the Windows Autopilot sign-in page may show HTML tags instead of rendering them. Microsoft lists this as a known issue and states it should be fixed in future versions of Windows. No fix is available yet.

Microsoft · Windows Autopilot

FixedKnown issue

Edge Update: crash during update with msedgeupdate.dll 1.3.261.11

Some customers may experience a crash during an update when running MicrosoftEdgeUpdate.exe with msedgeupdate.dll version 1.3.261.11. Microsoft confirms the issue and states that EdgeUpdate with msedgeupdate.dll 1.3.263.3 contains a fix. The crash does not involve the Microsoft Edge browser or the Microsoft WebView2 Runtime.

Microsoft · Edge

WorkaroundKnown issue

Edge 153: prolonged browser freeze with accessibility features enabled

In Microsoft Edge version 153, some users may experience a prolonged browser freeze when interacting with specific web applications while accessibility features are enabled. Microsoft has confirmed the issue and is working on a fix. Temporary workarounds are available.

Microsoft · Edge

Where the information comes from

We continuously read the vendors’ official sources, community reports and trade media and summarise them in our own words, with a link to the source:

  • Microsoft: Windows release health (Windows 10/11, Server 2016 to 2025), Windows message center, known issues of Microsoft 365 Apps (Outlook, Excel, Word, PowerPoint), Edge, Intune, Autopilot, Windows 365 and Entra Connect, Microsoft KB articles with timelines, Exchange and Windows IT Pro blogs, optionally Microsoft 365 service health and message center
  • other vendors: Veeam KB, Citrix (known issues), Ubuntu and Debian (regressions), Broadcom (VMware), Fortinet, Cisco, Mozilla, Let’s Encrypt
  • community (title, short excerpt and link only, without the names of the authors): Microsoft Q&A, Microsoft Tech Community (discussions), Veeam R&D Forums, Eleven Forum
  • targeted web research with AI (Claude), e.g. on the updates of the month – this also finds discussions on Reddit and in forums; such entries are labelled as community reports until the vendor confirms them
  • early warning from trade media (title and link only): Born’s Tech and Windows World, BleepingComputer, AskWoody, Windows Latest, Windows Central, gHacks, The Windows Club, Deskmodder, Dr. Windows, WindowsArea, Frankys Web, heise online

Summary and translation with AI (Claude by Anthropic) – without any data of visitors.

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