PT-9400 FAQs & Troubleshooting PT-9400 Not your product? Sort by Updated Date Popularity 2 Results 1. 13/03/2019 When I try to use the database function, the error message "Code=800401f9 Msg: Error in the DLL Source: ADODB. Connection Description:" appears. What should I do? 2. 04/02/2015 When I try to use the database function, an application error occurs. More FAQs (English only) P-touch Editor (Windows) FAQs & Troubleshooting