If you can't sign into your Microsoft account, most issues can be identified by our sign-in helper tool. The tool will ask you to enter the email address or mobile phone number you're trying to sign in with and check the details you provide. If we detect a problem with your account, we'll tell you what you need to do to solve the problem.

Can't find or install an app; Can't push an app or game to a device; Fix problems with apps; Can't find Microsoft Store app in Windows; Microsoft Store app doesn't open “Unable to Complete this transaction” error

Undo an action. Press + Z, or select Undo in the upper-left corner of the ribbon, until you've fixed the issue.. You can't undo some actions, such as selecting commands on the File menu or saving a file. If you can't undo an action, the Undo command changes to Can't Undo.. To undo several actions at the same time, select the arrow next to Undo, select the actions in the list that you want to ...

Installing Windows 11 on this PC is not recommended and may result in compatibility issues. If you proceed with installing Windows 11, your PC will no longer be supported and won't be entitled to receive updates. Damages to your PC due to lack of compatibility aren't covered under the manufacturer warranty. Before you install Windows 11

This is incredibly important if a mistake was made, you have issues with malware or a virus, or you just prefer a previous version. This is also important when you're collaborating with others and someone makes changes you didn't want in a file. The experience for Version History is similar across your apps.

A Blue cloud or a cloud with an arrow icon next to your OneDrive files or folders indicates that the file is only available online. Online-only files don’t take up space on your computer. You can’t open online-only files when your device isn’t connected to the Internet. Learn more about OneDrive Files On-Demand.

Security Note: Outlook accepts a wide variety of different file types, but blocks potentially unsafe attachments (including .bat, .exe, .vbs, and .js files) that can contain viruses. Even with Outlook attachment protection, be careful in opening any attachment, especially if it’s from someone that you don’t know or trust.

I don't see the Microsoft Rewards gift card I want. Some gift cards aren’t always available through Microsoft Rewards - check back often! In the meantime, there are always great apps, movies, games, sweepstakes, and more available - all from Microsoft. Explore the Redeem page to see what’s available now.

Set the degree of precision. On the All Methods tab, in the Constraint Precision box, type the degree of precision that you want. The smaller the number, the higher the precision. Set the degree of convergence. On the GRG Nonlinear or Evolutionary tab, in the Convergence box, type the amount of relative change that you want to allow in the last five iterations before Solver stops with a solution.

Change other default settings in the Normal template. You can customize the Normal template and change default settings for many aspects of a document, such as text formatting, paragraph formatting, document formatting, styles, text, pictures, AutoText entries, and keyboard shortcuts.