Due to HMRC's rules around furloughed staff not being able to work, it was necessary to suspend their email accounts. This post discusses a method to block email sending while still allowing the use of Hangouts/Chat.
Just got this error when trying to do a ClickOnce publish to a UNC path on a new installation on Visual Studio 2015, "An error occurred while signing: SignTool.exe was not found at path C:\Program Files (x86)\Microsoft SDKs\Windows\v7.0A\bin\signtool.exe.".