Cast to a display from a Windows PC. You can wirelessly connect your PC to a TV, projector, or other kind of external display that supports Miracast. Turn on your TV, projector, or other display. If you're using a Miracast dongle or adapter, make sure it's plugged in to the display.

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)

Having trouble connecting to your email from Outlook on your desktop? Follow these steps to let Outlook diagnose and fix errors in your Outlook mail profile that might be causing the issue.

Update the device driver. In the search box on the taskbar, enter device manager, then select Device Manager. Select a category to see names of devices, then right-click (or press and hold) the one you’d like to update. Select Search automatically for updated driver software. Select Update Driver.

Use System restore to make restore points when you install a new app, driver, or Windows update, and when you create a restore point manually. Restoring won’t affect your personal files, but it will remove apps, drivers, and updates installed after the restore point was made.

If multiple downloads are available and you want to update your Surface with the latest drivers and firmware from the Download Center, select the .msi file name that matches your Surface model and version of Windows and select Next. For example: To update a Surface Pro 7 with build 19041 of Windows 10, choose SurfacePro7_Win10_19041_22.011.9935 ...

Troubleshoot issues that occur when setting up external monitors. If you are trying to set up an external monitor and it’s not working, press the Windows logo key + P to make sure that the Extend option is selected. If the Extend option is selected, try the following troubleshooting tips.

Want to add a padlock to your email messages? You can use S/MIME in Outlook on the web to increase the security of messages. A digitally encrypted message can only be opened by recipients who have the correct key. A digital signature assures recipients that the message hasn’t been tampered with. Notes:

Hotmail is now Outlook.com. Learn how to sign in to access your Outlook.com, Hotmail, Live, or MSN email account.

If you already redeemed a product key, you're simply reinstalling the apps, or you know you have an assigned license through work or school, you can skip ahead and go to the section sign in to download and install Microsoft 365 or Office.