DoScan is not working under SYSTEM account in azure

Hi,

SEP version: 12.1.6 (12.1 RU6 MP1) 12.1.6306.6100

In Azure I have worker role which checks uploaded files for viruses using DoScan.exe utility.

It runs with NT AUTHORITY\SYSTEM account.

I tested it with EICAR test virus:

DoScan works only if I run it with current logged in admin user.

But when I run it with SYSTEM user rights (i wrote simple console app and run it with psexec.exe utility) DoScan silently finishes its execution with error code = 0. And it's unable to find this test virus.

I tried this approach: https://support.symantec.com/en_US/article.TECH199513.html

But it did not help me.

I am unable to change user in Azure environment.

So I need to run DoScan with SYSTEM account.