- Install the latest JRE from Oracle
- In the Java Control Panel, go to the Security tab and make sure 'Enable Java Content' is checked
- Open Safari
- Go to the ATO Business portal site https://bp.ato.gov.au/BpStatics/homepage.htm
- Click Login
- A dialog will apear asking you 'Do you want to trust the website “authentication.business.gov.au” to use the “Java” plug-in?'
- Click 'Trust'
- Now you will be asked 'Do you want to run this application?'
- Click 'Run'
- Another dialog will appear asking you to 'Allow access to the following application from this website?'
- Click 'Allow'
- You will now get the following error message:

```
An error has occurred with a result code of 4402.
[message=Read-only files cannot be used as keystores: /Users/warner/Library/Application Support/AUSkey/keystore.xml, errorCode=4402]
```
- **NOTE:** Changing the file permissions on the keystore will not help, the ATO requires access to the file system!
- To allow file system access, select Safari -> Prefereces... from the menu
- Go to the Security tab and click 'Manage Website Settings...'
- On the left-hand menu select Java
- In the right-hand pane you will see authentication.business.gov.au, in the drop-down menu select 'Run in Unsafe Mode'
- A dialog will appear asking 'Are you sure you want to trust the website “authentication.business.gov.au” to run “Java” in unsafe mode
- Click 'Trust'
- Click 'Done' and exit Preferences
- Open the ATO Business portal site again https://bp.ato.gov.au/BpStatics/homepage.htm
- Now you will be asked 'Do you want to run this application?'
- Click 'Run'
- Another dialog will appear asking you to 'Allow access to the following application from this website?'
- Click 'Allow'
- You should now be able to select your AusKey and login to the Business Portal