Hello all,
I am using Trados Studio 2021 (Version 16) with DeepL API Pro (valid API key).
Studio pre-translation fails with DeepL running - results in image
I have already performed the following troubleshooting steps:
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Confirmed DeepL API Pro key is valid and works with other files
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Verified correct endpoint is used: https://api.deepl.com (not api-free).
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Removed DeepL from Project Settings and re-added it.
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Completely removed the plugin manually from:
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%AppData%\SDL\SDL Trados Studio\16\Plugins
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%AppData%\SDL\SDL Trados Studio\16\Plugins\Packages
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%LocalAppData%\SDL\SDL Trados Studio\16\Plugins
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Restarted the computer.
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Reinstalled the latest available DeepL MT Provider for Studio 2021 from the RWS AppStore.
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Re-entered the API key manually (no trailing spaces).

Generated Image Alt-Text
[edited by: RWS Community AI at 5:41 PM (GMT 0) on 1 Mar 2026]

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