Certificate authority (CA) A certificate authority is an entity similar to a notary public.It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired.

Now you can view email for the accounts you added. You can also view your calendar, contacts, and tasks. Next steps. For steps to migrate your old email, calendar, and contacts to Microsoft 365, see Move your old email, calendars, and contacts to Microsoft 365.

Microsoft Authenticator is a free app that helps you sign in to all your accounts without using a password - just use a fingerprint, face recognition, or a PIN.

Automatically add a signature to a message. You can create an email signature that you can add automatically to all outgoing messages or add manually to specific ones.

Import a text file by opening it in Excel. You can open a text file that you created in another program as an Excel workbook by using the Open command. Opening a text file in Excel does not change the format of the file — you can see this in the Excel title bar, where the name of the file retains the text file name extension (for example, .txt or .csv).

Solution 4: Reset Surface. If you’re still having a problem with your touchscreen, try resetting your Surface. To learn how, see Restore or reset Surface for Windows and follow the recommended steps for "Reset this PC.". After the reset and device setup, use touch to open an application like Microsoft Edge or another web browser, and try to scroll pinch to zoom, swipe in from the right, and ...

The IFS function checks whether one or more conditions are met and returns a value that corresponds to the first TRUE condition. IFS will allow you to include up to 127 pairs of conditions (the test if something is True and the result if something is true). IFS can take the place of multiple nested IF statements.

Using the new Microsoft Teams, you can now be logged into multiple work, school, and personal accounts on the Windows desktop app. Easily switch back and forth between organizations, including guest organizations. See and change your notification settings for your various accounts.

Training: Learn how to get up and productive quickly with this Microsoft Teams Quick Start. Sign in to Teams, select Teams and Channels, reply to conversation threads, @mention someone, use emojis and stickers, and ask T-Bot questions.

Note: If you start to play a DVD or VCD in the Player Library, the Player automatically switches to Now Playing mode. The Blu-ray Disc format is not supported in Windows Media Player. To play a Blu-ray Disc, you need to use a non-Microsoft program that supports Blu-ray playback and a device capable of reading Blu-ray Discs.