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Resolved PB 2017 app freezes in Citrix, recover with minimize-restore app window

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  1. Antti Kukko
    Antti Kukko
  2. PowerBuilder
  3. Friday, 11 October 2024 15:23 PM UTC

Hi!!

I have browsed a lot of Q&A without finding the answer.

Our PowerBuilder application is as follows:

- PowerBuilder 2017

- database MS SQL Server, connection with SNC native Client

- more than 20 PBLs

- the window is quite normal application with MDI frame (AFAIK no themes in PB2017)

- citrix Workspace app 24.2.0

 

The client has used our app for years without issues. But now that they upgraded Citrix the following symptoms have started to emerge. When opening a main window with plenty of datawindows and starting to browse the dw rows, the app freezes up and CPU usage goes up. If the user minimizes the app from Windows taskbar - and then restores it, the app functions normally for a while, and the the same problem will repeat itself. 

We tried out adding DisableProcessWindowsGhosting() call to application open event - no help.

We suspect that something is gradually getting corrupted somewhere because the application works well if the Citrix server is recently rebooted and if there are not many users logged in. After the server is getting usage load, the problems are starting to develop. 

 

Any help greatly appreciated. Regards,

Antti

 

 

  1. Citrix
  2. PowerBuilder
Will Appeon provide a PowerBuilder application as ...
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Responses (3)
Antti Kukko
Antti Kukko Accepted Answer Pending Moderation
  1. Monday, 14 October 2024 11:09 AM UTC
  2. PowerBuilder
  3. # 1

We managed to resolve the issue. MS Touch Keyboard service/process seems to cause that problem. Disabling the process helps. This ticket can ben closed. 

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John Fauss
  1. John Fauss
  2. Monday, 14 October 2024 13:15 PM UTC
I'm very glad to learn you found the cause of the problem, Antti! Because you asked the question, you are the only person that can mark this question as resolved, and this can be done by clicking on the button that I believe says "Mark as Resolved" on your reply above. Would you please take a moment to do this? Thank you!
  1. Helpful
Armeen Mazda @Appeon
  1. Armeen Mazda @Appeon
  2. Monday, 14 October 2024 16:45 PM UTC
Thanks Antti for sharing the solution.
  1. Helpful
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Antti Kukko
Antti Kukko Accepted Answer Pending Moderation
  1. Monday, 14 October 2024 06:43 AM UTC
  2. PowerBuilder
  3. # 2

Citrix CVAD 7 2402 LTSR

Windows Server 22 21H2

PowerBuilder 2017 R2 build 1769

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John Fauss
John Fauss Accepted Answer Pending Moderation
  1. Saturday, 12 October 2024 14:38 PM UTC
  2. PowerBuilder
  3. # 3

What version of Windows is being used by the Citrix server? Did this change with the Citrix upgrade?

Because PB 2017 is an older version, it is not supported on the newer versions of Windows and Windows Server. This doesn’t mean it WON’T work, only that Appeon has not certified that it WILL work.

What does Citrix Support say about this issue, because from what you have described, the problem may be due to the Citrix upgrade?

Best regards, John

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