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New install of AEM workbench and FormDesigner unable to start


Level 1

I've just installed AEM Workbench v6.5.0.


When I open workbench, I can login to the server and retrieve the definitions without a problem.


However, when I try to open a form using Designer, I get the error below.




Any ides what could be causing this?




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4 Replies


Employee Advisor


Assuming you can open the Designer standalone, can you capture WB logs by running it from the command line: workbench.exe -debug -console. You have to run this command from the WB installation under program files.

These logs may point to the actual cause of the issue.


Level 1

That didn't show me any errors but I've realized that I cannot open Designer standalone, I get the error below.


I've tried repairing the Designer install but it's still the same.


Any ideas would be appreciated?



Level 3



Did you install an old version of Workbench? From the screen shot you sent I am seeing that the Designer version you are trying to open seems to be an older version 6.5.0v2019.

So if you could restate your installation:

1. What version of Workbench did you install?

2. Did you allow the Workbench install to install Designer? - If you already had an install of Designer you may not have attempted this and/or the Workbench install would have indicated that there already was an installation of Designer.

3. Were you updating Workbench from an earlier version of Workbench? If  Yes, which version?




Level 1

I think I'm missing some required software before install.


Thanks for your help, someone in my company is looking at this now.