If I misunderstand your needs or you still have problems on it, please let me know. If there is any post helps, then please consider Accept it as the solution to help the other members find it more quickly. The underlying connection was closed: Could not establish trust relationship for the SSL/TLS secure. Generally, there are some solutions for such kind of issue.ġ Install the SSL certificate’s root certificate No luck there either If the portal fails to report the error, the next best place to check is the AD Connect Sync Service Manager on our Active Directory domain controller where the AD Connect agent is installed.
Let’s check the AD Connect health page for sync errors.
You may check these settings and troubleshoot this issue with the help with IT firstly.ġ Is your machine that installs the gateway enabled TLS 1.2 or higher?Ģ Is there any change on firewall, proxy or on the network? Hmm, no issues reported on the main page of Azure AD Connect. Generally, it means your machine doesn’t trust the website’s root certificate authority. Hi to the error message, this issue is related to SSL/TLS secure.
