To further reduce the attack surface of SharePoint Server and improve the overall security posture of SharePoint environments, legacy SharePoint workflow platforms will be disabled by default. This change affects both SharePoint 2010 and SharePoint 2013 workflows. Organizations that still rely on SharePoint workflows can continue to use them by explicitly enabling workflow support on […]
After installing the August 2026 Cumulative Update (CU) for SharePoint, some Business Connectivity Services (BCS) models may stop working. Symptoms Following installation of the August 2026 CU, BCS external content types or BCS-based solutions may fail. The issue is typically reflected in the ULS logs with entries similar to the following: Business Connectivity Services […]
When running a 2010 workflow associated with a list, a column containing the workflow status is added to the list with a link to the workflow history list. Clicking this link redirects the user to the application page /_layouts/15/WrkStat.aspx. After installing July 2026 CU the link in this column is incorrectly encoded resulting in the […]
After installing July 2026 CU you might experience the issue that Office Online Server will fail to show Office and PDF documents. The issue is typically reflected in the ULS logs with entries similar to the following: w3wp.exe (0xXXXX) SharePoint Foundation Claims Authentication ahds5 Unexpected SPJsonWebSecurityBaseTokenHandler: ValidateTokenIssuer rejected Issuer ‘00000003-0000-0ff1-ce00-000000000000@…random-guid…’ […]
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 August 2026 Cumulative Update for Office Online Server. The KB article for August 2026 CU will be available at the following Location in a couple of hours: KB 5002895 – August 2026 Update for Office Online Server The download for August 2026 CU is available through the following link: Download […]
The product group released the August 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 August 2026 CU will be available at the following location in a couple of […]
This issue has already been discussed by several visitors of my site including sharing a variety of workarounds – but for completeness I’m including it here as a dedicated Trending Issue. When running a 2010 workflow associated with a list, a column containing the workflow status is added to the list with a link to […]
After installing July 2026 CU you might experience the issue that Office Online Server will fail to show Office and PDF documents. Symptoms The issue is typically reflected in the ULS logs with entries similar to the following: w3wp.exe (0xXXXX) SharePoint Foundation Claims Authentication ahds5 Unexpected SPJsonWebSecurityBaseTokenHandler: ValidateTokenIssuer rejected Issuer […]
