When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether. If this happens, you can use the Deployment Image Servicing and Management tool (DISM) and the System File Checker tool (SFC) to scan your system files and restore any corrupted or missing files.

Learn how to update your security processor or TPM firmware to protect Windows 10 and your device from attacks by malicious software.

Cumulative Update 15 for Microsoft Exchange Server 2019 was released on February 10, 2025. It includes fixes for nonsecurity issues and all previously released fixes for security and nonsecurity issues. These fixes will also be included in later cumulative updates for Exchange Server 2019.

When you try to install, update or start a program or a file, you receive the following error message: Error: Windows cannot access the specified device, path, or file. You may not have the appropriate permission to access the item.

You'll find direct links to downloadable packages that contain driver and firmware updates for Surface devices. You'll also find a section about imaging for IT professionals. To prepare for updates: Attach your Surface Type Cover or Surface Dock (if you have one) so it gets the latest updates, too. Make sure you have an internet connection.

The Recovery Drive utility in Windows is a valuable tool designed to back up essential system files needed to restore a PC to its original state. This utility creates a USB recovery media that can help you restore your Windows device to its factory settings, even if you replace the hard drive or completely wipe the drive.

Windows devices that has Unified Extensible Firmware Interface (UEFI) based firmware can run with Secure Boot enabled. The Secure Boot Forbidden Signature Database (DBX) prevents UEFI modules from loading. This update adds modules to the DBX. A security feature bypass vulnerability exists in secure boot.

Download all MSU files for KB5048667 from Microsoft Update Catalog and place them in the same folder (for example, C:/Packages).

“We couldn’t update system reserved partition” error installing Windows 10. When upgrading to, or updating, Windows 10, you might encounter the error “We couldn’t update system reserved partition”, error code 0xc1900104, or error code 0x800f0922. The System Reserved Partition (SRP) may be full.

First, you'll need to download the troubleshooter. Download troubleshooter. If you see the File Download box when you start downloading, select Run or Open. The troubleshooter provides steps for you to follow. If a program isn't listed in the uninstall options, you'll be asked for that program's product code.