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7.13 Controllers with 7.15 cu3 VDAs


Added a couple additional 2012 VDAs to a machine catalog/delivery group.  The whole environment is 7.13, but I went ahead & installed 7.15 cu3 VDA on the two new servers.

Plan is to do an upgrade down the road in a maintenance window everything to 7.15 cu3

Started seeing a rash of logon failures & users unable to log in.    Client removed the machines from the catalog/delivery group before I could look & the issue went away.


Question?  Is there an interoperability between 7.13 & 7.15 or I have another issue need to track down.


Don't see much in the Controller logs, but a lot of the errors below on the Storefront server.  Almost all connections are internal & directly to storefront


An error occurred during authentication.
Citrix.DeliveryServicesClients.Authentication.Exceptions.NoSessionForAuthenticationException, Citrix.DeliveryServicesClients.Authentication, Version=, Culture=neutral, PublicKeyToken=null
No session for authentication


Cheers - James

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