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Windows Installer failed to proceed when "Scan On - File Open" is turned ON


Nono
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We're using ESET PROTECT:

ESET PROTECT (Server), Version 8.0 (8.0.2216.0)
ESET PROTECT (Web Console), Version 8.0 (8.0.175.0)

with Client version: 

ESET Endpoint Security 8.0.2028.0
ESET Management Agent  8.0.1238.0

We have two sets of policies, one with Scan On > File Open is ENABLED and the other where it is DISABLED :

image.png.619f5ec2330404aded27771b5dbde5f3.png

On all the computer that have the feature ENABLED, it seems that Windows Installer failed to proceed. It simply hang forever.

As soon as the feature is disabled, re-starting the windows installer succeed.

I can reproduce the issue with two (private aka unsharable) .msi but can't seems to find any logs to troubleshoot the issue.

Would it be possible to know how can I deal with such issue ?

AKA: got some logs somewhere and understand why this feature blocks the installations ?

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What msi installer are you referring to? Note that disabling scan on open is not recommended as may allow malware to run undetected.

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The fact that we DISABLE it (only on specific computer is intended).

I ran the issue with the latest version of Dell Command Update (the software to update the firmware on DELL computers) : https://dl.dell.com/FOLDER06231658M/1/Dell-Command-Update-Application-for-Windows-10_34T96_WIN_3.1.2_A00.EXE

Everything runs normally until the "real" copy & installation phase.

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No problems here installing the above update with default settings. Could you provide a video as well as a Procmon log from installation?

Beforehand please make sure to temporarily disable Protected service in the HIPS setup and reboot the machine.

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