Per User Minor Upgrade Prompts UAC dialog.

[#1]

Summary

Per User Minor upgrade prompts UAC dialog.

Synopsis

Behaviour has been identified that whilst a first time per user installation for an application did not prompt a UAC dialog, a Minor Upgrade for the same application did.

This article will discuss a possible reason for the change the UAC behaviour.

Discussion

This change in behaviour is known to occur after Windows Update MS14-049 which was release to resolve a security vulnerability in Microsoft Windows.

Further details regarding this Microsoft Update can be found on the Microsoft Website here:
https://technet.microsoft.com/library/security/ms14-049

A description of the Security Update including known issues can be found here:
https://support.microsoft.com/en-us/kb/2918614


Microsoft have released an update to resolve the UAC behaviour which can be found in the following link:
https://support.microsoft.com/en-us/kb/3008627

It should be noted however that many users have found this fix to be unsuccessful in altering the behaviour:
https://social.technet.microsoft.com/Forums/windows/en-US/db68790f-641f-451e-86f9-b5b5227f2dfc/peruser-minor-upgrades-broken-in-windows-installer-after-kb2918614?forum=w7itprogeneral

The change in this behaviour due to the Windows Security Update MS14-049 is outside of the control of Installshield.