TrustModelData: registry keys for the Lync Clients.

And Hi,

Excellent article on TrustModelData by Terence Luk:

Location of the “TrustModelData: registry key for the Lync 2013 Client

Those who are familiar with the certificate warning message:
Lync cannot verify that the server is trusted for your sign-in address. Connect anyway?
… that is presented by the Lync 2010 client when signing into a domain that is different than your sign in address:
address:
Lync Server FQDN: lync2010.terence.local

may have come across the following Microsoft KB that demonstrates a way
to add trusted sign-in addresses via the registry to prevent this
The KB article states that the following registry locations is where the TrustModelData REG_SZ is supposed to be created:

  • HKEY_CURRENT_USERPoliciesMicrosoftCommunicator
  • HKEY_LOCAL_MACHINEPoliciesMicrosoftCommunicator

works great in the Lync 2010 Client but while tackling an issue I had
with the new Lync 2013 Client this week (I will write a separate post
about it), I noticed that the location has changed for the new client
and the new location is the following:

Name: TrustModelDataType: REG_SZ
If more than one domain is required for the trusted sign-in address then it can be entered in the following format:
… where the domains are separated by a comma and a space.

Author: Harri Jaakkonen

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