On newer versions of Studio 3T, simply deleting the folder isn't enough; the application checks the Windows Registry to see if a trial has previously been activated on that machine. You must remove this registry key as well.
Some antivirus tools restore deleted registry keys from quarantine. studio 3t reset trial windows fixed
Solution:
If you followed the "fixed" method above and Studio 3T still knows you had a trial before, try these advanced fixes: On newer versions of Studio 3T, simply deleting
Between 2023 and 2025, Studio 3T significantly hardened its trial detection mechanism. Older tutorials suggested simply deleting a registry key or a folder in AppData. Those methods no longer work. Some antivirus tools restore deleted registry keys from
What changed?
The "fixed" method described below is the current working solution as of early 2026. It involves a complete, multi-step purge of all traces before reinstalling.