I am also having a similar problem with 2 of our developers that have the E80.70HFA1 client and they cannot debug using MSVSMON.exe in Visual Studio 2012. I have a case opened with TAC so I will update you on my findings.
From what I've seen, there is a lot of activity in the AntiBot.log in C:\ProgramData\CheckPoint\Logs folder on the times that the developer was trying to debug. In the AntiBot logs, there were a few errors saying the following:
2018-02-09 16:09:43 t:0x00002740 [.\NFDriverManager.cpp(197)] AntiBot.UrlInterceptor.NFDriverManager [ERROR] Sending a EPNF_IOCTL_AB_VERDICT control code to the driver failed (attempt number: 1 ). Error:87
2018-02-09 16:09:43 t:0x00002740 [.\NFDriverManager.cpp(197)] AntiBot.UrlInterceptor.NFDriverManager [ERROR] Sending a EPNF_IOCTL_AB_VERDICT control code to the driver failed (attempt number: 2 ). Error:87
I have whitelisted the executable MSVSMON.EXE in both Anti-Bot and Sandblast Blades, and they still cannot debug.
Have any of you found a solution yet?