Recently I was working on a project and I came across with the below error message for roaming users. I was not able to configure outlook profile remotely. While configuring the profile you will get this below error message.
Figure : 1 Error Message
The problem occurs when you have Exchange Certificates from an Active Directory Certificate Authority.
Solution: You have to download the certificate from Exchange and Install them manually on each client machines who are not a domain joined users.
To install Certificate on client machines follow the below steps.
Copy the certificates which you have exported from Exchange Server to the client machine.
From Client Machine
Go to Start > Run > type MMC > and then Enter
Figure 2 : MMC Console
Figure 3 : Options to select
In figure 3 Select Add/Remove Snap-in…
Figure 4 : Steps and Options to Select
Figure 5 : Import Certificate on Local Computer
Figure 6 : Import Wizard
Figure 7 : Browse and Select the Cert
Figure 8 : Selecting Certificate Store
Click Finish in the final window.
Repeat the steps from 5 though 8 forTrusted Root Certificate and for Intermediate Certificate Authority.
Post which you should be able to configure outlook profile from a remote location.
Hope this information was useful.