To install an add-in that is typically installed with Excel, such as Solver or the Analysis ToolPak, run the setup program for Excel or Microsoft Office and choose the Change option to install the add-in. After you restart Excel, the add-in should appear in the Add-Ins available box.

Having a problem with your Excel? Check this page for recent issues that we've discovered, and what you can do about them.

You are installing an Office Add-in that runs on Windows, Macs, and the web versions of Office applications. An older Windows-only version of the add-in is already installed on your computer.

When you install new ActiveX controls, the Setup program for the controls usually registers each control on your computer, which makes it available to use from Excel. If the control doesn't appear in the list, you must register it manually.

View, manage, and install add-ins for Excel, PowerPoint, and Word. When you enable an add-in, it adds custom commands and new features to Microsoft 365 programs that help increase your productivity. Because add-ins can be used by attackers to do harm to your computer, you can use add-in security settings to help protect yourself.

Microsoft now combines the latest servicing stack update (SSU) for your operating system with the latest cumulative update (LCU). SSUs improve the reliability of the update process to mitigate potential issues while installing updates.

MUM and MANIFEST files, and the associated security catalog (.cat) files, are critical to maintaining the state of the updated component. The security catalog files, for which the attributes are not listed, are signed with a Microsoft digital signature.

To get the standalone package for this update, go to Microsoft Update Catalog. If you want to remove the LCU. To remove the LCU after installing the combined SSU and LCU package, use the DISM/Remove-Package command line option with the LCU package name as the argument. You can find the package name by using this command: DISM /online /get-packages.

Find help for Excel add-in programs created by Microsoft and third parties.

To perform data analysis on the remainder of the worksheets, recalculate the analysis tool for each worksheet. The Analysis ToolPak includes the tools described in the following sections. To access these tools, select Data Analysis on the Data tab.