Use the System File Checker tool to repair missing or corrupted system ...
If some Windows functions aren't working or Windows crashes, use the System File Checker to scan Windows and restore your files. Though the steps below might look complicated at first glance, just follow them in order, step-by-step, and we’ll try to get you back on track. Run the System File Checker tool (SFC.exe)
Uninstall or remove apps and programs in Windows
There are different ways to remove apps and programs, so if you can't find the one you're looking for, you can try another location. Note that some apps and programs are built into Windows and can't be uninstalled. You can try to repair a program first, if it's just not running correctly.
Fix problems that block programs from being installed or removed
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. First, you'll need to download the troubleshooter. Download troubleshooter.
Remove specific prevalent malware with Windows Malicious Software ...
The tool removes malicious software from an already-infected computer. Antivirus products block malicious software from running on a computer. It is significantly more desirable to block malicious software from running on a computer than to remove it after infection.
How to install programs from online sources on Windows 10
How to install programs from online sources on Windows 10. From the internet: You should download and install programs only from trusted publishers and retail websites. In your web browser, select the link to the program. Select Save or Save as to download the program.
Remove malware from your Windows PC - Microsoft Support
Microsoft Defender Antivirus is a powerful tool that finds and removes malware from your PC. Here's how to use it in Windows 10 or 11 to scan your PC. Important: Before you use Microsoft Defender Offline, make sure to save any open files and close apps and programs. Open your Windows Security settings.
Applies To: OneDrive (home or personal), OneDrive for Windows
Configure startup applications in Windows - Microsoft Support
Depending on how the applications are installed and registered in Windows, there are different ways to configure their startup behavior: Any applications that are registered in Windows with a startup task can be configured from Settings or from Task Manager. Other applications can be configured using File Explorer.
Can't open .EXE files in Windows 7 or Windows Vista
When you run an .exe file on a Windows based computer, the file may start a different program. Resolve issues where you cannot start .EXE files on Windows 7 and Windows Vista.
Common file name extensions in Windows - Microsoft Support
In File Explorer under View, in the Show/hide group, select the File name extensions check box. Below is a list of common Windows file name extensions and formats. Learn what file name extensions are, which extensions are common in Windows, and how to view them in File Explorer.
Make older apps or programs compatible with Windows
Try running the compatibility troubleshooter: In the search box on the taskbar, type Run programs made for previous versions of Windows and select it in the results. Select Next, select the program you're having trouble with, then select Next again.