User Configuration > Administrative Templates > Microsoft Office 2016 > Business Data > Web Service
User
HKCU\software\policies\microsoft\office\16.0\common\business data\limits\wcf\timeout
This policy setting allows you to specify the maximum timeout in milliseconds for the web service shim. This maximum value is enforced for applications that do not respect the default. If you enable this policy setting, you may specify the maximum timeout in milliseconds for the web service shim. If you disable or do not configure this policy setting, no maximum limit will be enforced.