How to add a signature to your Word documents. You can also use the Signature Line command in Word to insert a line to show where to sign a document.

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

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

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 It issues digital certificates, signs certificates to verify their validity and tracks which certificates have been revoked or have expired. Top of Page Digital signature assurances The following terms and definitions show what assurances are provided by digital signatures. Authenticity The signer is ...

About digital signatures and certificates in Office, and buying a digital certificate from a certificate authority or create your own.

Look up data in Excel to find data in a list and verify that it's correct. Then, perform calculations or display results with the values returned. Use the VLOOKUP, HLOOKUP, INDEX, MATCH, and OFFSET functions to find related data in rows and columns in Excel.

How to create or edit your Outlook signature for email messages. Include your signature, text, images, electronic business card, and logo.

To learn about digital signatures (also known as digital ID), what they can be used for, and how to use them in Word, Excel, and PowerPoint, see All about digital signatures. Create a signature line in Word or Excel (desktop) In the document or worksheet, place your pointer where you want to create a signature line. On the Insert tab, select Add a Signature Line in the Text group. In the ...

Use a ready signature template from a gallery to create your email signature in Outlook.

Learn how to troubleshoot Bluetooth problems in Windows. Resolve issues connecting a Bluetooth device or accessory.