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Important Release Notes

Workarounds for specific issues

The privacy feature of macOS that grants TinkerTool System access to the full disk may fail if you have multiple copies of TinkerTool System on your computer: As noted in the chapter Basic Operations: Privacy Policy Settings of your Mac, you have to approve that TinkerTool System has permission for Full Disk Access before you can use all features of the application. When you store multiple copies of TinkerTool System on your Mac however, this approval may fail unexpectedly. TinkerTool System may indicate that it does not have the necessary approval although it was given previously.

Workaround: This is a known design flaw of the Privacy feature of macOS. The protection feature can be confused when working with multiple copies of the same application. Use the following steps to ensure that macOS grants permission to the intended copy of the software:

  1. Identify all copies of TinkerTool System of your computer, e.g. by using Spotlight.
  2. Delete all superfluous copies, keeping the correct one.
  3. In System Preferences, go to Security & Privacy > Privacy > Full Disk Access, authorize as administrator, and remove all entries for TinkerTool System and TinkerToolSystem-PrivilegedTool if available.
  4. Re-add the entry for TinkerTool System.

Note that you can always keep backup copies of TinkerTool System on your Time Machine disks. This may not work when using third-party backup applications, however.


Privileged operations fail after a downgrade of the application: The security features of TinkerTool System won’t work as expected if you use a copy of the application and later use a copy with a lower version number. In this case, operations that require to be authorized by an administrator may no longer work. You will receive an error message instead, indicating that a “trust failure” has occurred.

Workaround: We strongly advise against any kind of downgrade of the software. However, if using an older version cannot be avoided for some reason, you’ll have to make sure that the version of the privileged tool currently running in macOS is matching the version that came with the version of TinkerTool System you like to use. Perform the following steps:

  1. In the running copy, select the menu item Reset > Remove Security Component….
  2. Follow the instructions the program is giving. The program will quit itself as last step of this operation.
  3. Launch the version of TinkerTool System you like to use.