KB5004378: Servicing stack update for Windows 7 SP1 and Server 2008 R2 SP1: July 13, 2021 Applies To Important: Windows 7 and Windows Server 2008 R2 have reached the end of mainstream support in January 2020 and are now in extended support. For more information, see here.

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Summary This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Summary This update makes quality improvements to the servicing stack component that installs Windows updates. Key changes include: Addresses an issue in the servicing stack when you install an update that has been signed by using only the SHA-2 hash algorithm. Microsoft strongly recommends you always install the latest servicing stack update (SSU) for your operating system before installing ...

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. We strongly recommend you install the latest servicing stack update (SSU) for your operating system before installing the latest cumulative update (LCU).

For more information, go to the following Microsoft blog page: Windows 7 servicing stack updates: managing change and appreciating cumulative updates. Install this servicing stack update before installing the latest monthly security update to mitigate a known issue where a monthly security update installation fails, and you receive a 0x8000FFFF ...

Learn about this SSU update for Windows 7 SP1 and Server 2008 R2 SP1, including improvements and fixes, any known issues, and how to get the update.

Learn more about this servicing stack update, including improvements and fixes, any known issues, and how to get the update.

This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) makes sure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates.

Fixes an issue in which WMF 4.0 cannot be updated on RODC. This issue occurs on a computer that is running Windows Server 2008 R2.