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.

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.

Install Microsoft 365 2019 or 2016 on a PC. Remember a one-time purchase version of Microsoft 365 is licensed for one install only. Depending on your browser, select Open file (in Edge or Internet Explorer), Setup (in Chrome), or Save File (in Firefox).

Uninstall OneDrive. Need more help? How to cancel an upload or stop a download in OneDrive. Contact Support. For help with your Microsoft account and subscriptions, visit Account & Billing Help. For technical support, go to Contact Microsoft Support, enter your problem and select Get Help.

Select Update Driver. If Windows doesn't find a new driver, you can try looking for one on the device manufacturer's website and follow their instructions. Reinstall the device driver. In the search box on the taskbar, enter device manager, then select Device Manager.

The 64-bit version is installed by default unless Microsoft 365 or Office detects you already have a 32-bit version of Microsoft 365 or Office (or a stand-alone app such as Project or Visio) installed. In this case, the 32-bit version of Microsoft 365 or Office will be installed instead.

Select File > Get Add-ins. Alternatively, you can also view your add-ins directly from the Home tab by selecting Add-ins . You can directly install add-ins from this page or select More Add-ins to explore. In the Office Add-ins dialog, select My Add-ins tab.

Refunds for digital games include Microsoft Store digital game offers, Xbox apps (excluding movies and TV apps), digital gaming bundle offers, digital game durable content, and some digital game consumable content, whether made available through the Xbox console, on your PC, or on your mobile device.

Open account troubleshooter. Sign out of Hotmail or Outlook.com. To sign out, go to Outlook.com. Select your account initials or account picture at the top corner of your Inbox. Select Sign out. Tips: If you don't see your picture at the top of screen, check to see if ad blocking is turned on. Sometimes this prevents the picture from showing.

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.