Cygwin X applications do not launch

Jones, Michael
Mon Jul 30 16:07:00 GMT 2018

Hi Marco,

You are correct!
With AV disabled, everything seems to work fine.

I now need to work with our IT guys to figure out how to configure the AV so that it does not interfere.

Many thanks for your help diagnosing the cause of this problem!


-----Original Message-----
From: Marco Atzeri [] 
Sent: 30 July 2018 11:54
To: Jones, Michael;
Subject: Re: Cygwin X applications do not launch

Am 30.07.2018 um 12:26 schrieb Jones, Michael:
> Hi Marco,
> Attached is the strace output. This was run from xterm.
> My anti virus is Trend Micro OfficeScan.
> Regards,
> Mike

Hi Mike,

I think the AV is interfering.
A lot of Windows DLL's are loaded at very low addresses:

--- Process 10964 created
--- Process 10964 loaded C:\Windows\System32\ntdll.dll at 0000000077860000
--- Process 10964 loaded C:\Windows\System32\kernel32.dll at 
--- Process 10964 loaded C:\Windows\System32\KernelBase.dll at 
--- Process 10964 loaded 
C:\Windows\System32\tmumh\20019\AddOn\\TmUmEvt64.dll at 
--- Process 10964 loaded C:\Windows\System32\psapi.dll at 0000000077a00000
--- Process 10964 loaded C:\Windows\System32\rpcrt4.dll at 000007fefdfc0000
--- Process 10964 loaded 
C:\Windows\System32\tmumh\20019\TmMon\\tmmon64.dll at 
--- Process 10964 loaded C:\cygwin64\bin\cygwin1.dll at 0000000180040000

for ntdll.dll for example:
0000000077860000 your system
00007ffd81700000 my system

and the exception at the end of strace is in that area

   160  398012 [main] gedit 10964 sigprocmask: 0 = sigprocmask (0, 0x0, 
--- Process 10964 thread 8560 created
--- Process 10964, exception 80000001 at 00000000779332ca
--- Process 10964 thread 12024 exited with status 0x80000001

can you try without with AV or excluding the "C:\cygwin64" directory ?


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