Exchange 2019 Outlook anywhere

Question

I recently configured Exchange 2019 server. But all the configurations of Outlook anywhere is not working.
The windows server and exchange licences are not activated yet and the certificate is free. Could that be the problem?
Please help me. I have been searching some days ago to resolve this.

Thanks for your help.

Answer 1

Hi @Imelda SOUNOU ,
Have you enabled the NTLM authentication Outlook Anywhere?

Please check whether the NTLM has been disabled on the domain controller
Go to Computer Configuration -> Windows Settings -> Security Settings -> Local Policies ->Security Options and check the following two settings:

1. Network security: Restrict NTLM: Incoming NTLM traffic (Policy Setting should be Allow all)
2. Network security: Restrict NTLM: NTLM authentication in this domain (Policy Setting should be Dsiable)
   

Then run below command in Domain Controller ‘s power shell to update the Gpu.

   gpuupdate /force  

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Answer 2

You should need to check multiple factors causing the issue of Outlook Anywhere. The starting point I suggest is to check a connectivity of Outlook from internet using the Microsoft tool available here: https://testconnectivity.microsoft.com/tests/Ola/input
Paste the entire text or suspected portion of error messages here so that people can check that and support you with solutions