[ARM] AC6 Open System Workbench debug & run problem

[KFplay4free]

Hello,
When I try run the program on Nucleo F446RE I encounter a conflict. This is what the console returns:

Info : STLINK v2 JTAG v24 API v2 SWIM v11 VID 0x0483 PID 0x374B
Info : using stlink api v2
Info : Target voltage: 3.259513
Error: init mode failed (unable to connect to the target)
in procedure 'program'
in procedure 'init' called at file "embedded:startup.tcl", line 473
in procedure 'ocd_bouncer'
** OpenOCD init failed **
shutdown command invoked

When I try to run the program while holding the reset button, it works, providing that I release it in proper time. Well, first I think it`s not how it should be and additionally I can`t debug the MCU at all. I don`t know if it`s a common conflict because I can`t find any solutions on the Internet What would You recommend doing? Thanks in advance