The product group released the May 2026 Cumulative Update for Office Online Server. The KB article for May 2026 CU will be available at the following Location in a couple of hours: KB 5002871 – May 2026 Update for Office Online Server The download for May 2026 CU is available through the following link: Download […]
In recent days we have seen several support cases where Kerberos authentication in SharePoint suddenly starts to fail. In the SharePoint ULS logs you may see errors such as: System.ServiceModel.Security.SecurityNegotiationException: A call to SSPI failed System.Security.Authentication.AuthenticationException: A call to SSPI failed System.ComponentModel.Win32Exception: The encryption type requested is not supported by the KDC Cause Starting with […]
Important: If your current farm patch level is September 2025 CU, execute the following PowerShell script to correct the folder permissions on the relevant folders otherwise installing the SharePoint fixes will fail: Fix-SeptemberCU-Permission-Problem.ps1 Alternatively you can also remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines. For more […]
Important: If your current farm patch level is September 2025 CU, execute the following PowerShell script to correct the folder permissions on the relevant folders otherwise installing the SharePoint fixes will fail: Fix-SeptemberCU-Permission-Problem.ps1 Alternatively you can also remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines. For more […]
Important: If your current farm patch level is September 2025 CU, execute the following PowerShell script to correct the folder permissions on the relevant folders otherwise installing the SharePoint fixes will fail: Fix-SeptemberCU-Permission-Problem.ps1 Alternatively you can also remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines. For more […]
Important: If your current farm patch level is September 2025 CU, execute the following PowerShell script to correct the folder permissions on the relevant folders otherwise installing the SharePoint fixes will fail: Fix-SeptemberCU-Permission-Problem.ps1 Alternatively you can also remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines. For more […]
The product group released the April 2026 Cumulative Update for Office Online Server. The KB article for April 2026 CU will be available at the following Location in a couple of hours: KB 5002855 – April 2026 Update for Office Online Server The download for April 2026 CU is available through the following link: Download […]
The product group released the April 2026 Cumulative Update for SharePoint Workflow Manager. This CU consists of a fix for SharePoint Workflow Manager and the SharePoint Workflow Manager client components which need to match SharePoint Workflow Manager. The KB article for April 2026 CU will be available at the following location in a couple of […]
Important: Microsoft Support has received guidance from engineering on how to resolve this issue for affected customers. Customers who installed the March 2026 CU on top of the January 2026 CU and are now experiencing the situation described below are advised to open a support ticket with Microsoft to receive assistance in resolving the issue. […]
In the last couple of days, we have received multiple reports about a change in the behavior of the Text web part in the Modern UI, introduced with the January 2026 CU for SharePoint Server Subscription Edition: When the Text and table formatting pane is open, the Text web part’s content area becomes read‑only. Editing […]
To enhance security a new Exploit Protection Setting was added to Windows when installing September 2025 CU for SharePoint Server Subscription Edition. This setting works as expected on Windows Server 2022 but caused the SharePoint Administration Service to fail on Windows Server 2025. Reference Trending Issue: SPAdminV4 fails to start on Windows Server 2025 after […]
September 2025 CU for SharePoint Server Subscription Edition included an security enhancement for the encryption algorithm used by the secure store service to save credentials. As a side effect credentials stored with the old algorithm could no longer be decrypted. When trying to edit an existing target application or when trying to add/update credentials the […]
