Zimmer Biomet add-in on excel ribbon disappeared
To re-enable it, follow these steps:
Within Excel, Go to File->Options->Add-Ins
Under the “Manage” drop-down, select “Disabled” and Click the “Go Button”
If you see a line for “Zimmer Biomet Excel Extensions,” select that line and click the “Enable” button. You might not see this – it’s okay if you don’t.
From the add-ins menu, change the “Manage” drop-down box to “COM Add-Ins” and click “Go.”
Scroll to the bottom, locate “Zimmer Biomet Excel Extensions,” check the box next to it and click “OK.”
The Ribbon should be back to normal.
If you need to re-install the ribbon, the instructions can be found on this post:
Uninstalling, if necessary, can be done from Control Panel -> Programs and Features -> Excel Extensions -> Uninstall
To resolve this, open Excel standalone. Once it's running, any attachment in Outlook you double-click will use the existing, open instance of Excel.