Reinstalling will erase all saved projects and custom device profiles.
Last updated: October 2026 – Information applies to MasterAdjust v4.5 and above. masteradjust installer password
Wait 15 minutes without closing the software, then try again. If still locked, restart your PC and attempt a known correct password. Error 2: Password Prompt Appears Even After Reinstall Cause: Residual registry keys or hidden user data survived the uninstall. Reinstalling will erase all saved projects and custom
| Type of Password | Default Value (if any) | Notes | |----------------|------------------------|-------| | Software install password (admin rights on PC) | None | Windows UAC may prompt, but no Belimo-specific password. | | Project file password | Set by integrator | Not a software default. | | | Blank or "belimo" (case-sensitive) | Common for older versions. Newer versions require setting a password on first use. | | Service PIN for select actuators | 1234 or 0000 | For NFC or ZTH-USB tool access, not MasterAdjust. | If still locked, restart your PC and attempt