This issue may occur if the computer did not meet the prerequisites at the time that the update was installed. Known issue that may occur when you try to remove Office updates The computer meets the prerequisites, but you can't remove an update Uninstall option will be available in the toolbar.

Locate and select the update in the list.

Under Tasks, click View installed updates.

Click Start, type appwiz.cpl in the Start Search box, and then press ENTER.To determine whether you can use the Add or Remove Programs tool to remove an Office update, follow these steps: If the Remove button is available, you can remove the Office update. In the Currently installed programs and updates list, click the update that you want to remove.Click to select the Show Updates check box.In the left column, click Change or Remove Programs.Click Start, click Run, type appwiz.cpl in the Open box, and then click OK.To determine whether an Office update can be removed by using the Add or Remove Programs tool, follow these steps:

How to determine whether an Office update can be removed by using the Add or Remove Programs tool Windows XP and Windows Server 2003 Removing an Office 2003 update requires the original installation source to be available if the Local Installation Source feature in Office 2003 Setup is not used. Removing an Office XP update requires the original installation source to be available. When you install either of these service packs, the Add or Remove Programs tool is updated to display Windows Installer updates under the product name.

Uninstall office 365 from mac