Ignition 7.7.7 unable to launch client and designer

One of our client has Ignition 7.7.7 (x64) and Java version 1.8.0_251 (previously it was 1.8.0_181).

After lock-down we found that the Ignition server is running but we are not able to launch designer and client. Ignition server and client is on same machine. We are getting error while launching designer or client “Unable to launch application” and stack is as per below.

We have reinstall java and Ignition still not able to resolve this issue. We are using Windows 10 OS.

java.lang.IllegalArgumentException: Malformed \uxxxx encoding.

  • at java.util.Properties.loadConvert(Unknown Source)*
  • at java.util.Properties.load0(Unknown Source)*
  • at java.util.Properties.load(Unknown Source)*
  • at com.sun.javaws.ui.ApplicationIconGenerator.(Unknown Source)*
  • at com.sun.javaws.ui.ApplicationIconGenerator.generate(Unknown Source)*
  • at com.sun.javaws.Launcher.prepareResources(Unknown Source)*
  • at com.sun.javaws.Launcher.prepareAllResources(Unknown Source)*
  • at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)*
  • at com.sun.javaws.Launcher.prepareToLaunch(Unknown Source)*
  • at com.sun.javaws.Launcher.launch(Unknown Source)*
  • at com.sun.javaws.Main.launchApp(Unknown Source)*
  • at com.sun.javaws.Main.continueInSecureThread(Unknown Source)*
  • at com.sun.javaws.Main.access$000(Unknown Source)*
  • at com.sun.javaws.Main$1.run(Unknown Source)*
  • at java.lang.Thread.run(Unknown Source)*

Please let me know the solution to resolve this issue. Thanks in advance.

Probably either upgrade Ignition or downgrade Java. Try the latter first, just to be sure it is a java issue. Note that Ignition v7.7 is no longer supported. If you must use it, at least use the very last one released.

Thanks! I will downgrade the JAVA as original it was 1.8.0_181. Till today, Ignition was working, suddenly this issue arises.

Please let me know if anything I check the above error.

If you must use unsupported software in a production environment, you can’t take any chances that upgrades in other software it depends on will break it. You probably should isolate this Win10 machine so that it doesn’t update itself, and the fact it isn’t updating doesn’t make your facility vulnerable.

Or upgrade to a supported version of Ignition.

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Thanks for the information.

Thank you in advance!

Time being I found work around and I able to launch client using below shortcut “Client Launcher for Windows”.
But still having same issues to launch the designer. Is there any alternate way to launch designer or fix the issue.

That same native client launcher also can launch the designer.

Ok, I will check.
Thanks for help on this. :open_book: :grinning: