The latest update to Microsoft Windows 11, version 23H2, brought with it a number of new features and fixes. However, the update also resulted in a noticeable decrease in performance for many computers. A large number of users of the Microsoft operating system reported problems such as slowness and crashes, especially in games, after installing the update.

These problems were widely discussed on official Microsoft forums, where users shared their negative experiences. Microsoft, in response, proposed a number of technical solutions. The company did not specify the exact cause of the problems, but offered detailed steps to try to resolve the setbacks.

Possible solutions after Windows update

One of the solutions presented involves resetting the Microsoft Defender. To do this, users need to run specific commands in PowerShell. Despite the complexity, this process promises to restore the performance of PCs affected by the update. To do this, run the following commands:

Set-ExecutionPolicy Unrestricted
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage

CPU virtualization in BIOS may also fix the problem

Another measure suggested by Microsoft is to enable CPU virtualization in BIOS settings. This procedure varies depending on the motherboard and processor of each computer, requiring users to seek specific instructions for their hardware models. The company highlights the need to restart the device after this step.

Memory must have Integrity enabled

In addition, Microsoft recommends ensuring that Memory Integrity is enabled in the Core Isolation section of Windows settings. This action enables Virtual Security, essential for resolving the performance problems caused by the 23H2 update. Once again, the company recommends restarting the device.

Users who followed these instructions reported significant improvements, returning to the performance before the update. The need to make technical adjustments after an update has been a source of frustration for many. The relationship between the update and the performance problems seems to be linked to changes in the operating system. These changes may be related to the functionalities that allow the operation of Copilot directly on Windows, a new tool that promises to revolutionize the interaction with the system.

Microsoft has not yet provided a detailed explanation of the cause of the performance problems. In the meantime, Windows 11 users who are experiencing these problems should follow the instructions provided by the company to try to restore the performance of their computers.

Possible causes of the performance problems

The exact cause of the performance problems caused by the Windows 11 23H2 update is not yet known. However, there are a few possible explanations:

  • Changes to the operating system’s security features: The update includes a number of new security features, such as Memory Integrity and Virtual Security. These features can add a performance overhead, especially on older or less powerful computers.
  • Bugs in the update: It is also possible that the update contains bugs that are causing performance problems. Microsoft is investigating the issue and has released a number of updates to address the problems.
  • Incompatible hardware: In some cases, the performance problems may be caused by incompatible hardware. For example, if your computer does not have a CPU that supports CPU virtualization, you will not be able to enable the feature and may experience performance problems.

How to fix the performance problems

If you are experiencing performance problems after installing the Windows 11 23H2 update, you can try the following solutions:

  • Reset the Microsoft Defender: This solution is relatively simple and can often resolve the performance problems. To reset Microsoft Defender, open PowerShell as an administrator and run the following commands:
Set-ExecutionPolicy Unrestricted
Get-AppxPackage Microsoft.SecHealthUI -AllUsers | Reset-AppxPackage
  • Enable CPU virtualization: This solution is more complex, but it can also be effective in resolving the performance problems. To enable CPU virtualization, follow the instructions in your computer’s BIOS or UEFI settings.
  • Enable Memory Integrity: This solution is also relatively complex, but it can be effective in resolving the performance problems. To enable Memory Integrity, follow the instructions in the “Core Isolation” section of Windows settings.

If you have tried these solutions and you are still experiencing performance problems, you can contact Microsoft support for help.