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[BUG]: Fail to fetch using ARM NPU Embedder on Windows when user has non-ASCII characters in username. #2584

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opened 2026-02-28 06:12:29 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-28 06:12:29 -05:00

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Originally created by @zacken on GitHub (Jun 20, 2025).

How are you running AnythingLLM?

AnythingLLM desktop app

What happened?

When trying to embed documents on a Windows ARM (Snapdragon) PC using the NPU Embedder it fails with a "Failed to fetch" error.
From log (username is anonymized):
[backend] info: [QnnNativeEmbedder] NPU is enabled, using QnnSDK backend at C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll
Runtime options:
backend_path: C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll
soc_model: 60
htp_arch: 73
htp_performance_mode: high_performance
enable_htp_fp16_precision: 1
Load model from C:\Users\HenrikFￃﾸrli\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed:Load model C:\Users\HxxxxxFￃﾸrxx\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed. File doesn't exist

In this case the character ø is replaced with ￃﾸ in the path when loading model.onnx

When loading LLM models the correct path is created:
[backend] info: [TokenManager] Initialized new TokenManager instance for model: C:\Users\HxxxxxFørxx\AppData\Roaming\anythingllm-desktop\storage\models\QNN\phi_3_5_mini_instruct_4k

Are there known steps to reproduce?

Can be reproduced by using Windows account with international characters on a Windows ARM Snapdragon PC, install AnythingLLM, select NPU Embedder, embed document.

Work if no international characters in Windows username.

Workaround

Start a command prompt in administrator mode and create a symlink between the wrong folder and the correct one:

mklink /d C:\Users\HxxxxxFￃﾸrxx C:\Users\HxxxxxFørxx

Verified to work.

Originally created by @zacken on GitHub (Jun 20, 2025). ### How are you running AnythingLLM? AnythingLLM desktop app ### What happened? When trying to embed documents on a Windows ARM (Snapdragon) PC using the NPU Embedder it fails with a "Failed to fetch" error. From log (username is anonymized): [backend] info: [QnnNativeEmbedder] NPU is enabled, using QnnSDK backend at C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll Runtime options: backend_path: C:\Users\HxxxxxFørxx\AppData\Local\Programs\AnythingLLM\resources\QnnSDK\aarch64-windows-msvc\QnnHtp.dll soc_model: 60 htp_arch: 73 htp_performance_mode: high_performance enable_htp_fp16_precision: 1 Load model from C:\Users\HenrikFￃﾸrli\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed:Load model C:\Users\HxxxxxFￃﾸrxx\AppData\Roaming\anythingllm-desktop\storage\models\qnn-embedder\all-minilm-l6-v2\model.onnx failed. File doesn't exist In this case the character ø is replaced with ￃﾸ in the path when loading model.onnx When loading LLM models the correct path is created: [backend] info: [TokenManager] Initialized new TokenManager instance for model: C:\Users\HxxxxxFørxx\AppData\Roaming\anythingllm-desktop\storage\models\QNN\phi_3_5_mini_instruct_4k ### Are there known steps to reproduce? Can be reproduced by using Windows account with international characters on a Windows ARM Snapdragon PC, install AnythingLLM, select NPU Embedder, embed document. Work if no international characters in Windows username. ### Workaround Start a command prompt in administrator mode and create a symlink between the wrong folder and the correct one: `mklink /d C:\Users\HxxxxxFￃﾸrxx C:\Users\HxxxxxFørxx` Verified to work.

deekerman added the

bug

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OS: Windows

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2026-02-28 06:12:29 -05:00

deekerman commented

2026-02-28 06:12:35 -05:00

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@timothycarambat commented on GitHub (Jun 24, 2025):

Interesting, thanks for writing this up but also providing a temporay workaround while we address that

@timothycarambat commented on GitHub (Jun 24, 2025): Interesting, thanks for writing this up but also providing a temporay workaround while we address that

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starred/anything-llm#2584

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