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What Exclusion for Server 2008R2 Domain Controllers, because Exchange 2013 is not connecting with Endpoint Software installed?

Domain Controller Server 2008R2 had Endpoint software installed for a long while and it was recently rebooted. After reboot Exchange 2013 is not able to authenticate users.

Endpoint software was removed from Domain Controller and all works fine.

I have added some Windows folder Exclusions (as recommended by Microsoft) in On-access scanning  for that DC, reinstalled Endpoint client, but still the same problem persists.

Any ideas? What else can I exclude or check, uncheck to resolve this issue.

Thank you



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  • This issue is fixed now. I have no clue why this solution worked.


    UTM9 was downgraded down 2 versions to fix Active Directory authentication issue. (UTM9 was able to browse AD but users where not able to authenticate. When users where trying to browse internet, popup window was asking for user name and password and no mater what was entered it was wrong.)

     Sophos Endpoint security for all users is installed on windows box, and not managed by UTM9. 

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  • This issue is fixed now. I have no clue why this solution worked.


    UTM9 was downgraded down 2 versions to fix Active Directory authentication issue. (UTM9 was able to browse AD but users where not able to authenticate. When users where trying to browse internet, popup window was asking for user name and password and no mater what was entered it was wrong.)

     Sophos Endpoint security for all users is installed on windows box, and not managed by UTM9. 

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