Trending Issue

After installing November 2023 CU (or later) for SharePoint Server 2016 Aggregated Newsfeeds are broken. Symptoms: Affected Users will see an empty Newsfeed web part. In the ULS log see the following error in ULS after installing November 2023 CU or later: Unexpected exception in FeedCacheService.GetConsolidatedFeed: Unable to cast object of type ‘System.Collections.Generic.List`1[System.Collections.Generic.KeyValuePair`2[System.String,System.Object]]’ to type […]

Trending Issue: HTTP Error 500.19 - “Cannot read configuration file because it exceeds the maximum file size”

After installation of recent updates for SharePoint (SP2016, SP2019, SPSE) users may receive an HTTP 500 error with the following additional details: “Cannot read configuration file because it exceeds the maximum file size” Cause The upgrade operation in SharePoint invoked through the configuration wizard (psconfig.exe or psconfigui.exe) after installing a SharePoint fix adds duplicate “<authorizedType […]

With September 2023 CU the AMSI security feature for SharePoint Server 2016, 2019 and Subscription Edition has been automatically enabled for a customers. After the activation of this feature a couple of customers have reported application pool crashes and 500 server errors. Background info The Windows Antimalware Scan Interface (AMSI) is a security feature introduced […]

May 2023 CU for SharePoint Server 2019 and Subscription Edition introduced an issue that affected custom solution deployment for farms where the SharePoint farm service account is a member of the local Administrators group. The symptoms are as follows: updating or retracting farm solutions takes a very long time IIS Application Pools for SharePoint web […]

April 2023 CU includes the new AMSI security feature for SharePoint Server 2016 (see here for details). This functionality caused problems on SharePoint Server 2016 machines installed on top of Windows Server 2012 R2 as AMSI relies on functionality in the Windows operating system which is only available in Windows Server 2016 and later. With […]