
Expand the "HKEY_CLASSES_ROOT\Installer\Win32Assemblies" key and then delete the "_Office15*" subkey. Delete the "_F01FEC" subkeys from the the "Features," "Products" and "UpgradeCodes" keys. Expand the "HKEY_CLASSES_ROOT\Installer" key. To do so, you need to: Open the Start Menu. Minimize the keys you expanded so far, if the list of keys is too long. Once you have uninstalled update KB971033, you need to reset the licensing status of your computer so that you are no longer met with the This copy of Windows is not genuine message on your desktop. Expand the "HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services" key and delete the "ose" subkey, if it is present.

Expand the "Installer\UserData\S-1-5-18\Products" key and then delete the "_F01FEC" key. Open the Microsoft Support and Recovery Assistant and follow the instructions as prompted. Expand the "Installer\Upgrade Codes" key and then delete the "_F01FEC" key. Expand the "Uninstall" key and then delete the " 0FF1CE" subkey. By using the VAMT, you can automate and centrally manage the volume, retail, and MAK activation process for Windows, Office, and select other Microsoft. Expand the "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion" key. The Volume Activation Management Tool (VAMT) provides several useful features, including the ability to perform VAMT proxy activation and to track and monitor several types of product keys.

Expand the "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\Delivery\SourceEngine\Downloads" key and then delete the " 0FF1CE}-" subkey. Remove registry keys created by the MSI installation of Office 2013 by deleting the "HKEY_CURRENT_USER\Software\Microsoft\Office\15.0" and "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Office\15.0" subkeys.
