I just moved to a new PC. When I try to launch Splunk I get an error message "Your license is expired. Please login as an administrator to update the license." How do I login as an administrator?
I reinstalled Splunk, but I'm still having this issue.
You use an account that has admin privileges. Usually you create one during the installation. Older versions used to have a default account (user:admin and pass:changeme) nowadays you just create one. If you forgot you can use these solutions to reset the password:
https://community.splunk.com/t5/Security/How-to-Reset-the-Admin-password/m-p/10622