How do I resolve error about missing database drivers when logging into xTuple?

If you get the following message (or similar) when logging into xTuple, it probably means you are on a Windows machine and are missing the latest Microsoft Visual C++ Redistributable for your installation (x64 or x86). Here's the error message:

A connection could not be established with the specified Database 
as the Proper Database Drivers have not been installed.

To resolve this error, locate the folder where your Windows xTuple client is located. Inside that folder, look for a file named `vc_redist.x64.exe.` This is an executable file which will update your Microsoft Visual C++ drivers. Run this executable and then try logging in to xTuple again. The error message should be resolved.

Microsoft publishes regular updates to its MSVC libraries. If installing the latest MSVC redistributable files—or the version distributed with xtuple.exe still does not work—you may need to install an older (2013) version of the MSVC redistributable. You can find that download here: https://www.microsoft.com/en-us/download/details.aspx?id=40784

If you are still getting errors after downloading the 2013 version you may need the 2015 version as well:

https://www.microsoft.com/en-us/download/details.aspx?id=52685

Having multiple MSCV versions on your computer is safe to do and should not cause a conflict.