The time must be synchronized between Identity Server and Access Gateway or set so the time difference is within one minute of each other for trusted authentication to work.
For Identity Server or Access Gateway Service, use YaST to verify the time settings. If you have a Network Time Protocol server, configure the Access Manager machines to use it.
For an Access Gateway Appliance, complete the following steps:
Click Devices > Access Gateways> Edit > Date & Time.
Select a method you want to use for time:
Set Date & Time Manually: Allows you to select the current time. Click this option to select year, month, day, hour, and minute in your current time zone, then click OK.
Set Up NTP: Allows you to specify the IP address of an NTP server. Click Set Up NTP. Use the public pool.ntp.org server or click New, then specify the IP address of an NTP server. To accept the configuration, click OK.
If the time on the machine is wrong by more than an hour, use both methods to set the time. Set it manually first, and then configure it to use NTP.
In the Time Zone section, select your time zone, then click OK.
Regardless of the method you used to set the time, you must select a time zone.
Click OK.
Click Devices > Access Gateways > Update > OK.
Continue with Enabling Trusted Authentication.