I recently updated the GroupWise 2012 Client for Windows on a Windows 10 Pro PC from version 12.0.1 to 12.0.4. Now when you launch the GroupWise 2012 Client for Windows you get a message like this.
"Either there is no default mail client or the current mail client cannot fulfill the messaging request. Please run Microsoft Outlook and set it as the default mail client."
GroupWise is set as the default mail app. Uninstalling and reinstalling the GroupWise 2012 Client for Windows does not solve the problem. Is this a registry issue or is it a Microsoft Office issue? The Windows 10 Pro PC does have Microsoft Office installed but I do not believe Outlook is installed because they have never had an Exchange Server nor do they use Office 365.