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Error during WAP installation in DMZ

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Achim Weiglein
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Hello together,

 

When I tried to install the WAP in a ADFS environment (fresh install), I get the following error message:

 

"An error occurred when attempting to establish a trust relationship with the federation service. Error: The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure channel."

 

Do you have any ideas how to solve this? The Event viewer shows the same message with error code 393.

ADFS Server can be reached via Browser. Trial logon is alright. Thanks for your help.

 

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