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.

Change from a 32-bit version to a 64-bit version or vice versa. Activate Windows. Fix Bluetooth problems in Windows. Learn how to install, reinstall, or activate Microsoft 365 or Office 2019 on a PC or Mac.

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.

All Outlook Data Files (.pst) and Offline Data Files (.ost) are listed along with the name of the account the files are associated with. If you cannot open your Outlook data file or suspect that the file is damaged, use the Inbox Repair tool (scanpst.exe) to repair errors in the file.

Download the automated tool. At the bottom of the browser window, select Run to launch the SetupProd_OffScrub.exe file. Select the version you want to uninstall, and then select Next. Follow through the remaining screens and when prompted, restart your computer.

When Microsoft Excel detects a corrupted workbook upon opening, it automatically starts File Recovery mode and attempts to repair the workbook. If File Recovery mode doesn’t start, try using this manual process to recover your workbook: Click File > Open. Click the location and folder that contains the corrupted workbook.

Try Microsoft Update or contact your company help desk. To download an update manually, see Office Updates. If you would like to update Office but can't open any of your Office apps, try repairing your Office suite: Go to Control Panel > Programs > Uninstall a program.

If a check is not visible, Scroll Lock does not appear in the Excel status bar. Simply check the box to have the status appear on the status bar. If Scroll Lock is on, your cursor moves between columns and rows, not cells. Here's how to turn off Scroll Lock.

Windows Media player should now be reinstalled. Note: To troubleshoot issues like playback and codec problems, see the "Get help" section in Windows Media Player. Learn how to get Windows Media Player 12 for Windows 10, Windows 8.1, and Windows 7.

Help to decide whether you should install the 32-bit Office version or the 64-bit Office version. Which version is right for you depends on how you plan to use Office. Find out about choosing between 32-bit Office and 64-bit Office.