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Learn how to reset your PIN if you aren't signed in to Windows and having trouble using your PIN.

How to freeze panes in Excel to keep rows or columns in your worksheet visible while you scroll, or lock them in place to create multiple worksheet areas.

Please note that the service fix will prevent new occurrences of calendar conflicts. It does not retroactively fix meetings that are already in the conflict state or that have duplicated items. Users that have conflict items only need to use Workaround 2 to clear the conflict items.

Decide which documents to recover from an unexpected close, delete recovered files you don't want, or close recovered files to review later.

Learn how to troubleshoot and fix problems setting up your email in Outlook.

You can resolve problems with Microsoft Authenticator by checking the tips in this article and reviewing some of the known errors.

Try these solutions if you can't sign in to your Outlook.com, Hotmail, Live, or MSN email account, or you're not sure how to sign in or sign out.

Training: Get started with SharePoint in Microsoft 365. At office.com, sign in to SharePoint, then select the SharePoint tile.

Internet Explorer 11 support ended on June 15, 2022. If any site you visit needs Internet Explorer 11, you can open it with Internet Explorer mode in Microsoft Edge.