Unknown error: Unable to build: the file dx.jar was not loaded from the SDK folder!

This error is annoying and seemingly hard to find a way to fix it.

I got it will Eclipse Luna (4.4.1) and the latest SDK and ADT.

After much messing around – I found the way to fix is to remove Android SDK Tools. SDK Platform-tools and Build-Tools (you might not need to remove al three but I tried platform-tools by itself and it didn’t work)tools


and then re-installed them. Restart Eclipse and the error should be gone!

2 Responses

  1. Tye July 31, 2015 / 09:58

    Thank you very much!

  2. Name X January 27, 2020 / 02:10


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