After deploying some sharepoint lists using Group Policy via Microsoft Outlook 2016/Account Settings/SharePoint Lists
The Lists would not add unless the user had clicked Allow to this error :
Do you want to allow this website to open a program on your computer?
Program: Microsoft Outlook
This error can stopped being displayed by deploying the below reg key :
Add Key stssync
In that Key Create a Dword : “WarnOnOpen”
For this to apply to All users on the machine apply to the Key’s below
Tags: 365, Do you want to allow this website to open a program on your computer, group policy, lists, sharepoint, Sharepoint list, SOFTWARE\Microsoft\Internet Explorer\ProtocolExecute\stssync, stssync, stssync://sts/?
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