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Resolved Failed to launch / ERR_CONNECTION_REFUSED error when running an installable cloud app

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  1. Michael Connell
    Michael Connell
  2. PowerServer
  3. Wednesday, 25 August 2021 11:48 AM UTC

Hi,

I'm attempting to test run a legacy PB application with PowerServer 2021.

It was necessary to make some modifications to the app to remove a number of PowerServer unsupported features, but I am now getting a clean build & deploy of the PowerServer project and the web APIs are compiling and running as expected.

However when I run the project I see the Welcome page in the browser, but the application does not launch (the launcher is already installed). Instead all I see is the message "Connecting..." flashing on and off in the bottom left-hand corner.

Checking the browser log shows that I'm geting the error "Failed to launch...because the scheme does not have a registered handle" followed by numerous "ERR_CONNECTION_REFUSED" messages.

Does anyone have any suggestions? Thanks.

Regards,

Michael Connell.

Error when updating the sample PowerServer 2021 pr...
PowerServer Project Error Ora-00942
Responses (4)
Michael Connell
Michael Connell Accepted Answer Pending Moderation
  1. Thursday, 26 August 2021 10:24 AM UTC
  2. PowerServer
  3. # 1

David,

Thank you for your response.

It seems that the problem was caused by the Cloud App Launcher not being properly installed.

The application is now running (though failing for another reason).

Thanks once again for your help.

Regards,

Michael Connell.

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David Xiong @Appeon
David Xiong @Appeon Accepted Answer Pending Moderation
  1. Thursday, 26 August 2021 10:02 AM UTC
  2. PowerServer
  3. # 2

Hi Michael,

Regarding the issue you have, we suggest that you try the following steps and see if it resolves the issue.

  1.  Please go to Control Panel -> Programs -> Programs and Features and see if the Cloud App Launcher is successfully installed.    

   

  2. If the Cloud App Launcher is not successfully installed, please go to the welcome page to download and install the Cloud App Launcher.

  3. After the Cloud App Launcher is installed, if the application still won't start, please click "Start the Application" manually on the welcome page and run your application.

  4. If it still doesn't resolve the issue, please check if there is any third-party firewall tool, such as Sophos. The process of Sophos such as swi_filter.exe   and swi_service.exe block access to the application URL. If that's the case, please configure the firewall to allow access to the following IP address and port numbers.
     http://127.0.0.1:26568
     http://127.0.0.1:26569

I hope the steps above help resolve your issue. If you still have any issues, please submit a ticket with screenshots of the error at https://www.appeon.com/standardsupport/newbug to better track this issue. Thanks!

Regards,

David

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Michael Connell
Michael Connell Accepted Answer Pending Moderation
  1. Thursday, 26 August 2021 09:40 AM UTC
  2. PowerServer
  3. # 3

Francisco,

Thanks for your reply.

To be honest I don't remember, but I'm assuming that if asked I would have responded "Allow".

Is there any way to reset this?

One thing - the error message "Failed to launch 'cloudapp://http://localhost/UserAdmin/' because the scheme does not have a registered handler." appears every time the "Start the Application" button is pressed.

Mike.

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Francisco Martinez @Appeon
Francisco Martinez @Appeon Accepted Answer Pending Moderation
  1. Wednesday, 25 August 2021 15:01 PM UTC
  2. PowerServer
  3. # 4

Hi Michael,

Did you click "Allow" when the browser prompted you to open the Cloud App Launcher for the first time?

Regards,
Francisco

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