We have a one way trust with one domain. The users are not resolving for some reason in all our environments. initially we thought it could be a firewall issue and disabled the firewall and it started working in few environments but failed again. Didnt observe anything from verbose uls logs. We opened a MS case and they suggested to remove "Http activation" from server roles and features and add it again. But even that didnt fix the issue. How to troubleshoot it further?
Hello try set PeoplePicker SearchADproperties with Powershell through STSADM. You will set here all AD domains and apropriate accounts for reading from AD.
stsadm -o setproperty -url http://<server:port> -pn peoplepicker-searchadforests -pv "forest:contoso.corp.com,<LoginName>,<Password>;domain:bar.contoso.corp.com,<LoginName>,<Password>"
Hope it helps!