Hi,
As far as I known, we can't use the URL of SharePoint site in Word file/template location directly. Please try the workaround:
1. Map the SharePoint Doc lib as network drive (e.g. Z:)
2. Set the Workgroup Template to a local drive (to create the reg key)
3. Open regedit and set the location to the mapped drive:
Setting Name: SharedTemplates (Type REG_SZ)
Reg Key: HKEY_CURRENT_USER\Software\Microsoft\Office\15.0\Common\General
More reference:
http://www.experts-exchange.com/OS/Microsoft_Operating_Systems/Server/MS-SharePoint/Q_27950770.html
http://nikpatel.net/2014/12/23/mapping-network-drive-for-office-365-and-sharepoint-online/
Please Note: Since the web site is not hosted by Microsoft, the link may change without notice. Microsoft does not guarantee the accuracy of this information.
Regards,
George Zhao
TechNet Community Support
It's recommended to download and install
Configuration Analyzer Tool (OffCAT), which is developed by Microsoft Support teams. Once the tool is installed, you can run it at any time to scan for hundreds of known issues in Office
programs.
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