Important: If your current farm patch level is September 2025 CU, remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU Below […]
Important: If your current farm patch level is September 2025 CU, remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU The […]
In the last couple of weeks we have received several reports of for SharePoint Server Subscription Edition application pool worker process crashes with a combination of the following Exception codes 0xC06D007E and 0xE0434352 being reported in the event log similar to these: Faulting application name: w3wp.exe, version: 10.0.20348.1, time stamp: 0xcfdb13d8 Faulting module name: KERNELBASE.dll, […]
Since release of September 2025 CU for SharePoint Server Subscription Edition we received several reports of application pool worker process crashes with Exception code 0xC0000409 being reported in the event log similar to this: Faulting application name: w3wp.exe, version: 10.0.17763.1, time stamp: 0xcfdb13d8 Faulting module name: owssvr.dll, version: 16.0.19127.20100, time stamp: 0x689cd397 Exception code: 0xc0000409 […]
Important: If your current farm patch level is September 2025 CU, remove the NT Authoritysystem account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU Below […]
Important: If your current farm patch level is September 2025 CU, remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU The […]
Important: If your current farm patch level is September 2025 CU, remove the NT Authoritysystem account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU Below […]
Important: If your current farm patch level is September 2025 CU, remove the NT Authority\system account from WSS_WPG and IIS_IUSRS local security groups of the SharePoint machines – otherwise installing the SharePoint fixes will fail. For more details check this article: Trending Issue: SharePoint fixes fail to install after installation of September 2025 CU The […]
With the September 2025 CU, SharePoint introduced an automatic machine key rotation timer job to enhance security by periodically updating the ASP.NET machine keys used for view state encryption and validation. This post explains how the job works, how keys are updated in memory, and how you can monitor and troubleshoot the process. How the […]
Microsoft is announcing the end of support and retirement for Office Online Server effective December 31, 2026. After this date, Office Online Server will no longer receive security updates, bug fixes, or technical support from Microsoft. This change is part of our ongoing commitment to modernizing productivity experiences and focusing on cloud-first solutions. To help […]
To enhance security September 2025 CU for SharePoint restricts the Windows WSS_WPG windows security group and the IIS_IUSRS windows security group from writing into the SharePoint _LAYOUTS directory (c:\program files\common files\microsoft shared\Web Server Extensions\16\TEMPLATE\LAYOUTS). As the SharePoint Configuration wizard adds the local system account of Windows (NT Authority\system) to the WSS_WPG windows security group, future […]
SharePoint Server 2025 CU for SharePoint Server 2016, 2019 and Subscription Edition includes security hardening for SharePoint Server 2013 workflows which enforces the most recent SharePoint Workflow Manager updates to be installed on SPWFM. As a side effect this also prevents classic workflow manager workflows from running as this version does not comply with this […]
