New Security Features released with September 2025 CU for all supported SharePoint Versions

To enhance security of SharePoint Server, three new security features are being introduced in September 2025 CU. These enhancements apply to all supported SharePoint versions — 2016, 2019, and Subscription Edition — and I’d like to highlight them in this article: Machine Key Rotation Timer job AMSI enabled for all web applications Test-DefenderAndAmsiWorkProperly Cmdlet to […]

The 25H2 feature update for SharePoint Server Subscription Edition has been released today and is included in the September 2025 CU for SharePoint Server Subscription Edition. About Feature Updates for SharePoint Server Subscription Edition: Releasing new features for a product which is used by a large number of users creates challenges for IT departments, e.g. […]

Below are the security fixes for the SharePoint OnPrem versions released this month. SharePoint Server 2016: KB 5002778 – SharePoint Server 2016 (language independent) KB 5002777 – SharePoint Server 2016 (language dependent) Microsoft Support recommends to install the complete September 2025 CU for SharePoint 2016 rather than individual security fixes. SharePoint Server 2019: KB 5002775 […]

The product group released the September 2025 Cumulative Update for SharePoint Server Subscription Edition. Monthly SharePoint Server Subscription edition updates are released as a single unified “uber” package containing both the language independent and language dependent fixes. Language independent and language dependent fixes will no longer be released separately. This is similar to the full […]

[Update from August 22nd – additional assemblies added] SharePoint Workflow Manager August 2025 CU switched from using the System.Data.SqlClient database connectivity layer to the modern and more powerful Microsoft.Data.SqlClient database connectivity layer. Microsoft.Data.SqlClient has different dependencies which are not automatically fulfilled on machines which do not have SharePoint Server Subscription Edition installed. Error messages similar […]

Below are the security fixes for the SharePoint OnPrem versions released this month. SharePoint Server 2016: KB 5002771 – SharePoint Server 2016 (language independent) KB 5002772 – SharePoint Server 2016 (language dependent) Microsoft Support recommends to install the complete August 2025 CU for SharePoint 2016 rather than individual security fixes. SharePoint Server 2019: KB 5002769 […]

The product group released the August 2025 Cumulative Update for SharePoint Server Subscription Edition. Monthly SharePoint Server Subscription edition updates are released as a single unified “uber” package containing both the language independent and language dependent fixes. Language independent and language dependent fixes will no longer be released separately. This is similar to the full […]