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Before proceeding with this guide, make sure you're familiar with our ISE troubleshooting best practices and FAQ.
If ISE node clock is not synchronized with the AD node clock, then authentication will fail.
Make sure that the date & time between ISE and AD node must be synchronized.
Make sure that the date & time between ISE and AD node must be synchronized. Before implementing in production, you can test your ISE configurations in our secure lab environment.
Step 1: You will be Unable to access ISE node through GUI?
Step 2: Make sure the date & time and time zone on ISE and AD must be synchronized.
Commands used:
show clock (To check the current date & time)
Step 3: Check date & time on the AD.
Step 4: If they are not in sync. You can manually sync the date and time on the ISE node via CLI.
Commands used:
Clock set Jan 17 04:58:00 2019
show clock (verify the date and time)
Step 5: Then go to browser and you will be able to access ISE.
Conclusion: ISE and AD node date & time should be in sync in order for GUI to work properly. Once basic synchronization is established, you can proceed to configure ISE policy sets for your environment.
