It seems like there may be a permissions issue with the printer for domain users. Here are a few troubleshooting steps you can try:
1. Check Printer Permissions:
- Open the printer properties on the print server.
- Navigate to the Security tab.
- Verify that the "Everyone" group has the necessary permissions (e.g. Print, Manage Printers).
2. Check Group Policy Settings:
- Run `gpresult /h report.html` on the client machine to generate a Group Policy report.
- Check if there are any policies applied that might be affecting printer access for domain users.
- Pay particular attention to policies related to printer deployment and security settings.
3. Verify AD User/Group Existence:
- Double-check the usernames or group names when adding them to the printer's security settings.
- Ensure that the users/groups actually exist in Active Directory.
- Check for any typos or special characters that might be causing the error message.
4. Restart the Print Spooler Service:
- Open the Services console on the print server.
- Locate the "Print Spooler" service and restart it.
- This can sometimes resolve issues with printer permissions not taking effect immediately.
5. Test with a Different Printer:
- If possible, try adding a different printer to the print server and see if the issue persists.
- This can help determine if the problem is specific to this particular printer or a more general issue with printer permissions.
6. Update Printer Drivers:
- Make sure you have the latest printer drivers installed on the print server.
- Outdated or incompatible drivers can sometimes cause printing issues.
If none of the above steps resolve the issue, please provide more details about your environment, such as the Windows Server version, printer make and model, and any other relevant information that might help further diagnose the problem.