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.

To access the code, you'll need a tool for reading MSI files—which is typically available to IT professionals. You'll find the product code in the property table of the MSI file. The troubleshooter helps fix problems that: Corrupt registry keys on 64-bit operating systems. Corrupt registry keys that control the update data.

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Use this app to try to recover lost files that have been deleted from your local storage device (including internal drives, external drives, and USB devices) and can’t be restored from the Recycle Bin. Recovery on cloud storage and network file shares is not supported.

Follow these steps to automatically diagnose and repair problems with files and folders in Windows. These problems might include the inablility to delete files or folders from the Recycle Bin, or troubles with trying to copy, move, rename, or delete a file. Select the Download button on this page.

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.

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.

After you install this hotfix, you might have to update your license to gain access to new objects that are included in this or a previous update. (This applies only to customer licenses.)

“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.