Application failed to connect

- May 29, 2020 at 7:16 pm
  
  FMS20
  Subscriber
  
  Hello,
  
  I am running Fluid flow (Fluent) in Ansys Student 2020 R1 and keep getting an 'Application failed to connect' message when trying to open 'Results'.
  
  If I try the same procedure in Fluent Flow (CFX), I cant even access 'Setup,' and get the exact same result as in this thread:
  
  /forum/forums/topic/cfx-application-failed-to-connect-1/
  
  with the exception that I am using the 2020 R1 version.
  
  I have followed the steps outlined in that thread, and got the same ineffective results.
  
  Is there anything else I can try?
- May 29, 2020 at 8:23 pm
  
  Hunter Wang
  Ansys Employee
  
  Try to set an system environment variable QT_OPENGL=desktop, hopeful it works.
- May 30, 2020 at 12:55 am
  
  FMS20
  Subscriber
  
  So Ill put QT_OPENGL=desktop as the value, does it matter what I put as the variable name?
- June 1, 2020 at 12:05 pm
  
  Hunter Wang
  Ansys Employee
  
  variable name: QT_OPENGL
  
  variable value: desktop
- June 1, 2020 at 3:23 pm
  
  FMS20
  Subscriber
  
  The environment variable did not make any difference for Fluent or CFX.
  
  What exactly is the nature of the application not connecting at this particular point (Solution for Fluent and Setup for CFX)?
  
  Is there an older version of this program that I might try as well?
- June 1, 2020 at 3:41 pm
  
  Hunter Wang
  Ansys Employee
  
  make sure QT_OPENGL=desktop is set, try to open standalone CFD-Post 2020 R1 (Start > ANSYS 2020 R1 > CFD-Post 2020 R1)
- June 1, 2020 at 4:36 pm
  
  FMS20
  Subscriber
  
  Yes, the system variable is set.
  
  I do not see a 'CFD-Post 2020 R1' in that location or anywhere else.
- June 1, 2020 at 5:46 pm
  
  Hunter Wang
  Ansys Employee
  
  check ANSYS installation log and error, in "C:Program FilesANSYS Inc" by default.
- June 2, 2020 at 3:12 am
  
  FMS20
  Subscriber
  
  It looks like the issue has been resolved:
  
  I checked in the ANSYS Inc folder, and eventually found a CFDpost.exe. When I tried to open it, it said that vcruntime140.dll was missing. I eventually reinstalled Microsoft Visual C++, went back to Fluent, and was able to open Setup.
  
  There were no error logs - I'm not sure how that dll file was missed. But Fluent seems to be working now.
  
  Thanks for the assistance.
- June 2, 2020 at 1:02 pm
  
  Hunter Wang
  Ansys Employee
  
  Good to know. The original issue is "keep getting an 'Application failed to connect' message when trying to open 'Results'."
  
  Assuming this issue has been resolved as well?
- June 2, 2020 at 3:49 pm
  
  FMS20
  Subscriber
  
  Yes, I meant to say that I can open Results in Fluent now.
  
  The original issue is resolved.
- June 2, 2020 at 9:05 pm
  
  Hunter Wang
  Ansys Employee
  
  good to know
- September 25, 2023 at 10:02 am
  
  Cuong Nguyen Van
  Subscriber
  
  I can't result after solution in workbench because it gives an error: application failed to connect
  what do I do now?