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"Microsoft.IdenityModel.dll" - access denied

CFI

New Pleskian
I am using Plesk 12 and this happend a few times already:
Plesk seems to add its two "default groups" (psacln and psaserv) to the security rights of this dll with "deny all" and so my app does not work anymore until I remove that again.

The Dll is located somewhere in C:\Windows\winsxs\msil_microsoft.identitymodel_31bf3856ad364e35_7.1.7600.16394_none_6757fcc4a98759f9

Why/when is Plesk doing this and more importantly how can I stop this?

regards
CFI
 
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