Could not write value Installed to key.

The error message below occurs during installation if the user installing does not have adequate permissions.



Run REGEDIT (if you cannot run this, you will need to log in as administrator to complete).

Locate HKEY_LOCAL_MACHINE\software

Right Click on Forecast 5 Ltd and select Permissions:

Highlight your user name:

You will note that the permissions are not set to full - tick "Full Control" and click Apply/OK.

Alternatively, the recommended fix is to click the ADD button and add the user "Everyone", click "Check Names":


Click on OK

Then tick Full Control

Click Apply, then OK and close the registry editor.

Forecast 5 should now install correctly - run the installer again.

If this does not fix this issue please contact for further assistance.