Please ensure extensions are compatible with the new vCenter Server and re-register extensions with the new vCenter Server after upgrade. Please refer to the vSphere documentation on extensions, and the upgrade and interoperability guides.Error: User Running the upgrade does not have ‘Replace a process level token Privilege.’ Resolution: Assign a process level token privilege to the user
In RUN: type GPEDIT.MSC
Add a user (example domain\vmadmin) by Click add USer or Group.
Continue installation with no errors !!!