Most IDM patchers are small executable files. When run, they typically: Ask the user to close IDM and its background processes.

If you encounter issues with a patched version of IDM, you cannot contact official support for help. Conclusion

Add entries to the Windows Registry to simulate a successful registration. The Significant Risks of Using IDM Patchers

Some advanced patchers claim to allow IDM to update itself without losing the patched status, though this is often unreliable. How These Patchers Generally Work