There is a problem with the proxy server's security certificate

Posted on 2014-08-25
Medium Priority
Last Modified: 2016-06-13
I have 2 exchange 2013 server with all in one role with DAG configured. Getting attached error every 4 - 5 days once for all users and need to restart both server's. Then again it will work fine for some day. What might be the issue
Question by:kolathaya123
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Author Comment

ID: 40284973
LVL 36

Expert Comment

by:Seth Simmons
ID: 40286342
run the exchange connectivity test for autodiscover and outlook anywhere


also see this article

Error message when Outlook tries to connect to a server by using an RPC connection or an HTTPS connection: "There is a problem with the proxy server's security certificate"
LVL 18

Expert Comment

ID: 40286525
Can you check what authentication methods are used on outlook anywhere

Check with: Get-OutlookAnywhere | fl *auth*

Here's the default values:
ExternalClientAuthenticationMethod : Negotiate
InternalClientAuthenticationMethod : Ntlm
IISAuthenticationMethods           : {Basic, Ntlm, Negotiate}

Accepted Solution

kolathaya123 earned 0 total points
ID: 40302776
I installed SP1 and CU5, and till now it is fine

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