This article lists the default user names and passwords to log in to Profiler/STM by version.
Profiler versions 3.8.10, 4.0.0, 4.0.4, 4.1.0, 4.1.1, 4.2.0, 4.2.5
For all version up to 126.96.36.199: admin / tektools
For all versions beginning with 4.1.0: admin / admin
For rebrands until 4.1.0, logins were admin / vendorname, as indicated in the following: