You need to uninstall the stand-alone Microsoft OneDrive for Business 2013 sync client. [Edit: As noted in the comments, this issue is caused by any version of the stand-alone sync client, not just the Business version.] It looks like this in Add/Remove Programs:
The stand-alone sync client is the Incompatible Office product installed on your machine referred to by the February 10, 2015 update for Office 2013 (KB2920798) update. Your edition of Office 2013 came with its own OneDrive for Business 2013 sync client:
If you have one of the following versions of Office 2013, you already have the OneDrive for Business (formerly SkyDrive Pro) sync client installed:
Office Professional Plus 2013
Office 365 Enterprise E3
Office 365 Midsize Business
Office 365 Small Business Premium
This included OneDrive sync client is conflicting with the stand-alone client. As noted in the installation instructions, the stand-alone version is only meant to be installed with Office 2010:
The OneDrive for Business client can be installed side by side with Office 2010....Using OneDrive for Business alongside the 2007 Office system is not a supported scenario.
