Use the System File Checker tool to repair missing or corrupted system ...
Use the System File Checker tool to repair missing or corrupted system files. When critical Windows system files are missing or corrupted, some Windows features may stop working correctly or Windows may stop responding altogether.
Backup, restore, and recovery in Windows - Microsoft Support
Recovery can involve using system restore points, reset options, recovery drives, or reinstalling the operating system to return your PC to a functional state. Windows provides several built-in tools to help you manage these processes effectively.
Update drivers manually in Windows - Microsoft Support
Learn how to update drivers in Windows using Device Manager to update or reinstall a driver.
Use the Office offline installer - Microsoft Support
Use the Office offline installer to install Office 2016 or Office 2013 if you don't have an active Internet connection or you're having problems with slow speed or unreliable connections.
Applies To:
Office 2024, Office 2021, Office 2019, Office 2016, Microsoft 365 for home, Office for business, Office 365 Small Business, Microsoft 365 admin, Office 365 operated by 21Vianet, Office 365 operated by 21Vianet - Small Business Admin, Office 365 operated by 21Vianet - Admin, Office 365 Germany - Enterprise, Office 365 Germany - Enterprise admin
Restore a previous version of an Excel file - Microsoft Support
When you try to open a workbook in Microsoft Excel for the web, you might see an error message that tells you the extension of your file has changed, or that your file is corrupted and can't be opened. This issue can often be resolved by restoring a previous version of the file using the version history feature.
Applies To:
Excel for the web
Media Feature Pack for Windows 10/11 N (September 2022)
Here’s how to install the Media Feature Pack: On Windows 10 N: Select , then select > Apps > Apps and Features > Optional features > Add a feature. Find the Media Feature Pack in the list of available optional features. On Windows 11 N: Select , then select > Apps > Optional features.
Download and install or reinstall Office 2019, Office 2016, or Office ...
From the Overview page, select Office apps and on that page, find the Microsoft 365 product you want to install and select Install. To install Microsoft 365 in a different language, or to install the 64-bit version, use the dropdown to find more options. Choose the language and bit version you want, and then select Install.
Applies To:
Office 2019, Office 2016, Office 2016 for Mac, Office 2013
Microsoft Store doesn't open - Microsoft Support
If you're having trouble launching Microsoft Store, here are some things to try: Reset the Microsoft Store cache: Press the Windows Logo Key + R to open the Run dialog box, type wsreset.exe, and then select OK.
Windows Recovery Environment - Microsoft Support
Windows RE provides a set of tools to help diagnose and repair issues that might prevent Windows from starting correctly. These tools include: Reset this PC: Allows you to reset your computer to its factory settings, with options to keep or remove personal files. To learn more, see Reset your PC.
Copilot troubleshooters - Microsoft Support
Get Help has troubleshooters for Copilot you can run for many common scenarios. These often help resolve issues without the need to contact support. If a troubleshooter is available for your issue, select Start to run that troubleshooter.