# Designer Window Fails to Open

**URL:** <https://forum.inductiveautomation.com/t/designer-window-fails-to-open/44126>\
**Category:** Ignition\
**Created:** [March 4, 2021, 9:29pm UTC](https://forum.inductiveautomation.com/t/designer-window-fails-to-open/44126 "2021-03-04T21:29:49Z")\
**Posts on this page:** 1\
**Showing post:** 11

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**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\
**Post date:** [March 9, 2021, 4:00pm UTC](https://forum.inductiveautomation.com/t/designer-window-fails-to-open/44126/11 "2021-03-09T16:00:08Z")

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Can you follow along the troubleshooting that happened in this thread?

> [@\[BUG-Resolved\] Designer is never actually launched](http://forum.inductiveautomation.com/t/bug-resolved-designer-is-never-actually-launched/20597/9):
>
> Thanks everyone. I fixed the classpath in my command line test, got this error: Starting Bootstrap Loader v3.0 Exception in thread "main" java.awt.AWTError: Assistive Technology not found: co m.sun.java.accessibility.AccessBridge at java.desktop/java.awt.Toolkit.newAWTError(Toolkit.java:472) at java.desktop/java.awt.Toolkit.fallbackToLoadClassForAT(Toolkit.java:4 88) at java.base/java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachO ps.java:183) at java.bas…

Seems related to having installed the Access Bridge or something.

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