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.
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Important
If you are a software developer, you can use this procedure to install or remove an automation program before you design installation and removal programs for your add-in.
Add a new Excel add-in
On the Home tab, select Add-ins.
On the My Add-ins page, choose an add-in, or select More Add-ins.
On the Apps page, choose a category in the left nav bar and select the add-in you want,
From the add-in's description page, select Add and follow the prompts to install.
Activate an existing Excel add-in
On the Home tab, select Add-ins.
On the My Add-ins page, select one of your existing add-ins.
To deactivate an Excel add-in
On the File tab, select Options.
On the Add-ins tab next to Manage: choose Excel Add-ins and select Go.
Clear the checkbox for the Add-in to deactivate.
Note
Inactivating an add-in does not remove the add-in from your computer. To remove the add-in from your computer, you must uninstall it.
To remove an Excel add-in
Right-click the add-in on the Home ribbon.
Select Remove Add-in.
Add or remove a COM Add-in
Important
If you are a software developer, you can use this procedure to install or remove an automation program before you design installation and removal programs for your add-in. If you are not a developer, you should not need to use this procedure. Contact the system administrator who provided the add-in if you want installation and removal instructions.
Add a COM add-in
On the File tab, select Options, and then choose the Add-Ins tab.
In the Manage drop-down box, choose COM Add-ins, and select Go.
The COM Add-Ins dialog box appears.In the Add-Ins available box, select the check box next to the add-in that you want to install, and then click OK.
Tip If the add-in that you want to use is not listed in the Add-Ins available box, select Add, and then locate the add-in.
Remove a COM add-in
On the File tab, select Options, and choose the Add-Ins tab.
In the Manage drop-down box, choose COM Add-ins, and then select Go.
The COM Add-Ins dialog box appears.In the Add-Ins available box, clear the check box next to the add-in to remove, and select OK.
Note This removes the add-in from memory but keeps its name in the list of available add-ins. It does not delete the add-in from your computer.To remove a COM add-in from the list of available add-ins and to delete it from your computer, choose its name in the Add-ins available box, and then select Remove.
Add or remove an automation add-in
Note
If you are a software developer, you can use this procedure to install or remove an automation program before you design installation and removal programs for your add-in. If you are not a developer, you should not need to use this procedure. Contact the system administrator who provided the add-in if you want installation and removal instructions.
On the File tab, select Options, and choose the Add-Ins tab.
In the Manage drop-down box, choose Excel Add-ins, and then select Go.
The Add-Ins dialog box appears.To install an automation add-in, in the Automation servers available box, select Automation, and then choose the add-in that you want.
Tip If the add-in that you want isn't in the list, select Browse, locate the add-in, and then click OK.To remove an automation add-in, you must remove it from the registry. See your system administrator for details.