Learn how to concatenate text strings in Excel using the CONCATENATE function. Our step-by-step guide makes it easy to join two or more text strings into one.

How to change your product key to fix activation errors that can occur if you own and install multiple one-time purchases of Office..

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Learn how to fix problems signing into your Microsoft account. Resolve password verification, locked account, and other Microsoft account login issues.

If you're not automatically signed in with your work or school account, follow the prompts to enter the email address and password for your work or school account.

How to use the IF function in Excel to make logical comparisons between data values.

Find out how to set up and manage your security info and verification codes for your Microsoft account, and troubleshoot common issues.

There are several ways to archive messages in Outlook. The methods that you can use depend on the type of email accounts that you have set up in Outlook.

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You can insert a drop-down list of valid entries (also called a drop-down menu or drop-down box) in Excel to make data entry easier, or to limit entries to certain items that you define.