The rollout of the Windows 11 September 2025 Update (KB5065426) has not been without its challenges. Following its release, users have reported a range of installation errors, as highlighted by Windows Latest. For those who successfully installed the update, issues related to Digital Rights Management (DRM) have emerged, causing some video playback to experience noticeable jitters or sluggishness. However, it’s important to note that applications like Netflix have not shown any problems during testing.
Microsoft has acknowledged these concerns, tracing the root of the issue back to the previous optional update, KB5064081 from August 2025. Users who installed either of these updates may find their experience impacted, particularly when using digital TV and DVD applications that rely on the Enhanced Video Renderer component with HDCP enforcement.
For many users, the Enhanced Video Renderer may operate in the background without their knowledge. If video playback feels less smooth than usual, it is likely that the September 2025 Update is the culprit. Microsoft has assured users that they are actively working on solutions and will provide updates as they become available.
Other problems in the Windows September 2025 Patch Tuesday
In addition to the DRM issues, other complications have surfaced following the September Patch Tuesday. Reports on the Feedback Hub indicate that some Electronic Arts (EA) games have ceased functioning correctly after the August and September updates, particularly those utilizing the Javelin anti-cheat engine. This could affect popular titles such as FIFA, F1, Battlefield, and NFL, although it appears that these issues are not widespread.
Further complications include rendering problems in DirectX 9 games, where users have noted distorted textures and colors during opening sequences, significantly detracting from the gaming experience. While DirectX 9 is an older standard, reports of these issues have surfaced, indicating that they may affect a subset of users.
Moreover, some users have reported that Microsoft Ink services have been disrupted, with one user stating, “KB5065426 update has completely broken Microsoft.Ink.dll in .net applications.” There are also ongoing investigations into PowerShell functionality, with users noting consistent issues following the application of the latest update. Microsoft has recognized these PowerShell problems, particularly concerning PSDirect connections, although they classify it as an “edge case” that may not affect all users.
Additionally, the September update has been linked to issues with Server Message Block (SMB) v1, potentially hindering file sharing and connectivity. Microsoft has committed to addressing these various concerns in future Windows releases, aiming to restore a seamless user experience.
