Well, if you are facing Quicken error code 7003 then it can be due to reasons like connectivity issue, Security application, the Windows application, etc. However, if you take a quick action it will be useful. For this, you need to get verify the below things:
1. Internet connectivity is working fine
2. The windows update are installed
3. Uninstall the security software
4. Remove or delete the third-party applications
If all this is good, and still you are encountering issues, then immediately contact the technicians. They will soon revert you with the solutions. Apply them and make sure you do not skip any step. This will finally fix your Error 7003 issue. The service is all round the clock, 24*7.