Uninstall or remove apps and programs in Windows - Microsoft Support
Press and hold (or right-click) on the app, then select Uninstall. Select Start > Settings > Apps > Installed apps . Find the app you want to remove, select More > Uninstall. Note: Some apps can't be uninstalled from the Settings app right now. For help uninstalling these apps, follow the instructions to uninstall from Control Panel.
Use the System File Checker tool to repair missing or corrupted system ...
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.
How to use the PC Health Check app - Microsoft Support
PC Health Check app brings you up to date info on your Windows device health, helping you take action to improve your device performance and troubleshoot performance problems. It is periodically updated based on customer feedback to help you make the most of your Windows PC. How to open PC Health Check.
Gaming Services Repair Tool for PC | Xbox Support
If you are having issues installing or updating Gaming Services on your PC, or if you are noticing that the Xbox app for PC is launching with missing content, you may want to download and run the Gaming Services Repair Tool for PC.
Fix problems that block programs from being installed or removed
If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store. The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys.
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
Fix problems that block programs from being installed or removed
If you're having problems with an app you got from Microsoft Store, go to Fix problems with apps from Microsoft Store. The Program Install and Uninstall troubleshooter helps you automatically repair issues when you're blocked from installing or removing programs. It also fixes corrupted registry keys.
How to troubleshoot Windows Installer errors - Microsoft Support
When you install, uninstall, or update a program on a Windows-based computer, you may receive one of the following error messages. The Windows Installer Service could not be accessed. Windows Installer Service couldn't be started. Could not start the Windows Installer service on Local Computer. Error 5: Access is denied.
App permissions - Microsoft Support
In Windows 11, use the Privacy page to choose which apps can use a particular feature. Select Start > Settings > Privacy & security. Select an App permission (for example, Location) then choose which apps can access it. The Privacy page won't list apps with permission to use all system resources.
App & Browser Control in the Windows Security App - Microsoft Support
In the Windows Security app on your PC, select App & browser control, or use the following shortcut: App & browser control. Smart App Control adds significant protection from new and emerging threats by blocking apps that are malicious or untrusted.