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.

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.

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.

This article explains how to repair apps and programs in Windows 11 and use Settings to fix common app issues without reinstalling. You can repair some apps and programs if they're not running correctly. Note that you won't see repair, change, or modify options for all apps and programs. Repair options from the Settings page.

We're sorry you're having problems with the Mail and Calendar apps for Windows 10. To fix the issue, please try each of the following solutions in order. Before you begin, make sure that your device has the latest operating system and app updates. Try the general troubleshooting solutions in Troubleshooting Mail and Calendar apps for Windows 10.

To get help while using the Windows 10 Mail and Calendar apps, select the Settings icon on the lower left corner of the app and then select Help > Open Help. Was this information helpful?

Learn how to get older apps or programs to run on Windows 10 or Windows 11 by adjusting compatibility settings.

Find the app you want to reinstall, and then select Install. Select the Close (X) button in the upper-right corner of the app window to close it. Then, reopen the app. Make sure Windows has the latest update: Select check for updates now, and then select Check for updates.

There are two ways to get apps from Microsoft Store: Select Start , and select Microsoft Store. From the taskbar, select the Microsoft Store icon.

To install a standalone version of classic Outlook for Windows, select your language from the dropdown, and then select Download. Follow the prompts to complete the installation. Which language do you need? Tip: You can also try installing classic Outlook from the Microsoft Store.