This script uses the Active Directory PowerShell module to locate duplicate proxyaddresses throughout your forest. The script must be run from a computer that have the AD PowerShell installed, and can reach all PDCEmulators in all domains in your forest.
Microsoft recently released a New version of OneDrive for Business Sync Client. You can see the announcement made on 16th Dec 2015 here. Upgrading to the new Sync Client is not a simple Wizard like upgrade, but the steps are simple enough for an IT person to follow on their local machine to upgrade the Sync Client for Office 365 OneDrive for business.