devenv, msedge, discord, skype and other processes cannot be suspended #856
Description
NtSuspendProcess will no longer allow suspension (regardless of privilege level) of some processes including:
Visual Studio (devenv.exe)
Microsoft Edge (msedge.exe)
Skype (skype.exe)
Discord (discord.exe)
Steam (steamwebhelper.exe)
Windows 8.1 and Windows 10 are both affected. The issue appears related to process threads that are calling NtFsControlFile and NtReadFile on synchronous pipe handles when attempting to suspend the thread.