cannot update 12.1 to Build 189, other systems no problem

Products

• Output Management Document Viewer
• Output Management Web Viewer

Issue/Introduction

Unable to update Web Viewer to build 189 on some servers...
The process gets hung at 8% at the screen Installing Web Viewer r12.1.
There's a truncated message, Installing... Deleting Folder: C:\Program Files\CA\CA_OM_Web_Vie...

Environment

Release:
Component: WBVLUW

Resolution

The ID running the Updater/Install did not have permission to update into sub-folders. This is what caused the install to stall - it did not have permission to delete portions of the previous install. Customer switched to using an ID with administrative permissions and the update then successfully ran to completion on all servers.