topic Failed to Connect to a database Help in Data Management Questions https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75740#M4394 <HTML><HEAD></HEAD><BODY><P>What do I do? Thank you<IMG alt="" class="image-1 jive-image j-img-original" src="/legacyfs/online/438171_Screenshot (3).png" /></P></BODY></HTML> Tue, 26 Feb 2019 21:24:33 GMT NicholasScales 2019-02-26T21:24:33Z Failed to Connect to a database Help https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75740#M4394 <HTML><HEAD></HEAD><BODY><P>What do I do? Thank you<IMG alt="" class="image-1 jive-image j-img-original" src="/legacyfs/online/438171_Screenshot (3).png" /></P></BODY></HTML> Tue, 26 Feb 2019 21:24:33 GMT https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75740#M4394 NicholasScales 2019-02-26T21:24:33Z Re: Failed to Connect to a database Help https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75741#M4395 <HTML><HEAD></HEAD><BODY><P>A quick search on Google for that error message leads to:</P><P><A href="https://community.esri.com/thread/7655">.XLSX PROBLEM - Failed to Connect to Database - Class Not Registered</A>&nbsp;</P><P><A href="https://community.esri.com/thread/198317">Installed ArcGIS 10.5 but get the following error when trying to add an Excel table:"Failed to connect to database. An u…</A>&nbsp;</P><P><A href="https://community.esri.com/thread/191124">how to resolve failed to connect to database an underlying database error occurred class not registered</A>&nbsp;</P><P><A href="https://community.esri.com/thread/180764">Error: Failed to connect to database. Class not registered</A>&nbsp;</P><P>...and many more such links...</P><P></P><P>So basically, just&nbsp;<SPAN style="background-color: #ffffff;">Download and install the 2007 Access Databse Engine driver and this should fix the issue. Try this link:</SPAN></P><P><SPAN style="background-color: #ffffff;"><A class="link-titled" href="https://download.cnet.com/2007-Office-System-Driver-Data-Connectivity-Components/3000-10254_4-75452798.html" title="https://download.cnet.com/2007-Office-System-Driver-Data-Connectivity-Components/3000-10254_4-75452798.html">2007 Office System Driver: Data Connectivity Components - Free download and software reviews - CNET Download.com</A>&nbsp;</SPAN></P><P></P></BODY></HTML> Wed, 27 Feb 2019 04:31:26 GMT https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75741#M4395 Asrujit_SenGupta 2019-02-27T04:31:26Z Re: Failed to Connect to a database Help https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75742#M4396 <HTML><HEAD></HEAD><BODY><P>The fix for this is described in the help, along with other guidance for using Excel data.</P><P>If you are using the current version of Office you should install the 2010 driver, not the 2007 one. It is linked in the help:</P><P><A class="link-titled" href="http://desktop.arcgis.com/en/arcmap/latest/manage-data/tables/understanding-how-to-use-microsoft-excel-files-in-arcgis.htm" title="http://desktop.arcgis.com/en/arcmap/latest/manage-data/tables/understanding-how-to-use-microsoft-excel-files-in-arcgis.htm">Understanding how to use Microsoft Excel files in ArcGIS—Help | ArcGIS Desktop</A>&nbsp;</P><P></P><P>Alternatively, you can save as .xls or .csv, loading those does not require the Excel 2010 driver installed to load to ArcMap.</P></BODY></HTML> Wed, 27 Feb 2019 16:59:12 GMT https://community.esri.com/t5/data-management-questions/failed-to-connect-to-a-database-help/m-p/75742#M4396 curtvprice 2019-02-27T16:59:12Z