If you're looking for Help on specific Excel Add-ins, such as Solver or Inquire, see Help for Excel for Windows add-ins. If you're looking for additional help with Excel add-ins using the COM Add-ins dialog box, see Add or remove add-ins in Excel. Get a Microsoft 365 Add-in for Excel.

Some Office 2019, Office 2016, and Office 2013 products come with a product key. If yours did, before installing Microsoft 365 for the first time, sign in with an existing or new Microsoft account and enter your product key at office.com/setup. Redeeming your key is what links your account with Microsoft 365 so you only have to do this once.

Unblock a single Excel XLL Add-in. In most cases you can unblock an XLL by modifying the properties of the file as follows: Open Windows File Explorer and go to the folder where you saved the file. Right-click the file and choose Properties from the context menu.

When you select the Import Settings option during setup, the web add-in counterparts of your existing COM add-ins in classic Outlook for Windows are installed in the new client. The following table lists the applicable COM add-ins and their web add-in counterparts.

Use an add-in while composing a message. Create a new message or reply to an existing one. From the ribbon, select the Message tab, then choose the add-in you want to use. If the add-in doesn’t appear in the ribbon, select Apps to view your installed add-ins.

Add-ins provide optional commands and features for Microsoft Excel. By default, add-ins are not immediately available in Excel, so you must first install and (in some cases) activate these add-ins so that you can use them. Some add-ins are built in to Excel, such as Solver and the Analysis ToolPak.

Get an Office Store add-in. On the Insert tab, look for the Add-ins group. To get new add-ins, select Get Add-ins. To use add-ins you already have, select My Add-ins. The add-ins you'll see will depend on the kind of Microsoft 365 subscription you have.

Following are examples of some common nested IF (AND ()), IF (OR ()) and IF (NOT ()) statements in Excel. The AND and OR functions can support up to 255 individual conditions, but it’s not good practice to use more than a few because complex, nested formulas can get very difficult to build, test and maintain.

Which browsers work with Office for the web and Office Add-ins. How to sign in to Outlook on the web. Fix account settings being out-of-date in Mail or Calendar. Still need help?

Microsoft has partnered with leading companies to build add-ins that help you get things done right from your inbox. How do the add-ins work? You can install an add-in by opening the Office Store from within Outlook.com or by going to Microsoft AppSource .