Article ID: 124215, created on Jan 18, 2015, last review on Jun 17, 2016

  • Applies to:
  • Plesk for Windows


I have plesk for Windows installed in a Parallels Virtuozzo Containers for Windows container. Various Plesk and system processes are failing randomly with different errors:

Access is denied. (Error code 5) at CreateProcess exited with error code -1073741502


Failed to parse response. Reason: XML error at line 1 column 1. Error message: Not well-formed (invalid token) Process output: Cannot create process: C:\PARALL~1\Plesk\python\python.exe C:\Parallels\Plesk\admin\bin\  --get-tasks-list


Failed to launch the checking script 'C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\examine_launcher.exe'.Access is denied.
(Error code 5) at execute  /c "C:\ParallelsInstaller\parallels\PANEL-WIN_12.0.18\examine_launcher.exe --check-system"


Unable to process run as command: Unable to start ("C:\Parallels\Plesk\admin\bin\PMMcli.exe" --get-tasks-list): (5) Access is denied.
Execute file name: C:\Parallels\Plesk\admin\bin\plesksrv.exe


Unable to start ("C:\Parallels\Plesk\admin\bin\php.exe" -q "C:\Parallels\Plesk\admin\plib\cu\task-async-executor.php" -task-id 63): (5) Access is denied.
at Unable to execute CU(wmain line 135)
Execute file name: C:\Parallels\Plesk\admin\bin\task-async-executor.exe

Or it can be a simple 'Access Denied' window

Access Denied

From the Hardware Node side check the resource limits configured for the affected container, specifically the number of processes:

C:\vzlist <Container_ID> -o ctid,vprvmem,vprvmem.b,numproc,numproc.b


      101      499     512.00     99      100

'numproc' is the current number of processes running in container, 'numproc.b' is the number of processes allowed to simultaneously run inside the container.


Container hit the configured 'numproc.b' limit defined from Hardware Node


Allocate more resources for the container:

C:\vzctl set 101 --save --numproc 200

No reboot is required.

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Unable to execute CU(wmain line 135)

Access is denied. (Error code 5) at CreateProcess exited with error code -1073741502


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