Go to office.com, and sign in to your work or school account. In the upper left corner of the window, select the app launcher > All apps > SharePoint. Tip: If you don't see the SharePoint app under All apps, use the Search box near the top of the window to search for SharePoint.

You can directly install add-ins from this page or select More Add-ins to explore. In the Office Add-ins dialog, select My Add-ins tab. Select an add-in you want to view the details for and right-click to select Add-in details option. Click a heading below for more information .

If you set up your list source as an Excel table, then all you need to do is add or remove items from the list, and Excel will automatically update any associated drop-downs for you. To add an item, go to the end of the list and type the new item. To remove an item, press Delete.

When to use a multiple-selection list box. Use a multiple-selection list box when you want to: Enable users to select multiple items in a list. Enable users to type their own value in a list. Show most or all of the items in a list on the form by default.

Fix your audio drivers. Hardware problems can be caused by outdated or malfunctioning drivers. Make sure your audio driver is up to date and update it if needed. If that doesn't work, try uninstalling the audio driver (it will reinstall automatically).

Outlook add-ins provide solutions to help you better interact with Outlook and complete tasks on your messages and appointments without leaving Outlook. Some add-ins are installed by your email administrator, but you can install other ones from the Office Store.

Add-ins in Outlook.com are programs or utilities that help you automate tasks when you view or create messages. Microsoft has partnered with leading companies to build add-ins that help you get things done right from your inbox.

For other help with your Microsoft account and subscriptions, visit Account & Billing Help. To get help and troubleshoot other Microsoft products and services, enter your problem here . Post questions, follow discussions and share your knowledge in the Outlook.com Community.

Plug-ins and add-ons for Windows Media Player. Plug-ins or add-ons add functionality—such as audio effects or DVD capability—to Windows Media Player. You can download plug-ins or add-ons for your version of the Player using the links below.

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