Error installing 7.7 patch "An Installation Support File C:\Users\myname\AppData\Local\Temp\{0cd...}\_isUser.dll could not be installed. Access is denied"

(Doc ID 1467783.1)

Last updated on MARCH 02, 2017

Applies to:

Siebel CRM - Version 7.7.2.8 [18379] and later
Generic Windows

Symptoms

While installing 7.7.2.8 patch the popup error is received "An Installation Support File C:\Users\myname\AppData\Local\Temp\{0cd...}\_isUser.dll could not be installed. Access is denied. The AppData folder is missing from C:\Users\myname

Cause

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