Troubleshooting: Power Pivot Ribbon Disappears

In rare cases, the Power Pivot ribbon will disappear from the menu if Excel determines that the add-in is destabilizing to Excel. This might occur if Excel closes unexpectedly while the Power Pivot window is open. To restore the Power Pivot menu, do the following: Go to File > Options > Add-Ins. In the Manage… More Troubleshooting: Power Pivot Ribbon Disappears