InsightFace installation or initialization fails: separate packages from FaceID assets
Missing insightface, failed wheel builds and initialization errors require different checks: interpreter, native build, execution backend and model files.
Symptoms and scope
FaceID can fail while installing a Python package, importing it, preparing an InsightFace analysis model, or running an image. These are different stages; keep the first relevant traceback.
Error fragments for search; details vary by version and environment:
No module named 'insightface'
Failed building wheel
ExecutionProvider
Source-supported context
IPAdapter Plus requires insightface for FaceID and says most FaceID adapters also require a paired LoRA. Its pinned loader imports FaceAnalysis, sets a model root under ComfyUI's models directory, passes the selected provider name with ExecutionProvider appended, and calls prepare; its default analysis model is buffalo_l unless another name is supplied. Installing the Python package alone does not establish that the analysis model, ONNX Runtime provider, adapter and LoRA are usable. IPAdapter README Pinned loader ONNX Runtime providers
Cases to distinguish
1. insightface was installed into another interpreter, so the Python process running ComfyUI cannot import it.
2. pip fails while resolving or building a specific package. Diagnose the named failing distribution and version: the current InsightFace 2.0 PyPI release has a universal Python wheel, so a general claim that InsightFace has no compatible prebuilt wheel is inaccurate. A dependency, older version or local build may still fail. A newer release is not automatically compatible with the installed IPAdapter node.
3. Import succeeds, but the named analysis model is unavailable or its selected ONNX Runtime execution provider cannot initialize. Adapter, CLIP Vision and FaceID LoRA discovery are separate later checks.
Diagnostic sequence
This is an editorial procedure, not a diagnosis of your machine.
Step 1. Record the first failing command/node and full traceback. In the same interpreter that starts ComfyUI, check python -m pip show insightface onnxruntime onnxruntime-gpu and a plain import insightface. Do not assume the shell's default Python is the ComfyUI interpreter.
Step 2. For installation failure, record the exact failing distribution, Python version, platform and package version. Use python -m pip debug to inspect compatible tags; inspect the package's official files and build requirements before changing versions or installing third-party wheels.
Step 3. After import works, record the chosen FaceID preset, InsightFace model name, configured model root and provider. Compare the provider with onnxruntime.get_available_providers() in that same environment. Check the model package and its license independently of the Python package.
Step 4. In a workflow copy, test a supported FaceID adapter, its paired LoRA and any required CLIP Vision file with one authorized image. Preserve any new adapter, LoRA or shape error as a separate stage. Recheck dependency constraints before changing ONNX Runtime or InsightFace.
Completion check
The ComfyUI interpreter imports InsightFace, the requested analysis model prepares with an available provider, and a minimal correctly paired FaceID workflow reaches sampling. A successful pip command alone proves none of the latter stages.
Limitations and cautions
InsightFace's code and pretrained model packages have different terms; the upstream model guide describes the published pretrained models as non-commercial research use. Review the terms for the exact weights and obtain permission for identifiable people's images. This site did not install packages, download models, test providers or run a GPU workflow.
Original sources
- IPAdapter Plus README — checked 2026-09-26.
- Pinned IPAdapter InsightFace loader — checked 2026-09-26.
- pip debug reference — checked 2026-09-26.
- InsightFace PyPI release files — checked 2026-09-26.
- ONNX Runtime execution providers — checked 2026-09-26.
- InsightFace model guide and terms — checked 2026-09-26.
Source and English-language review: 2026-09-26. Package and runtime behavior must be checked against the installed versions; no compatibility guarantee is claimed.
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Sources & references
2026-09-26 checked IPAdapter README and pinned a0f451a InsightFace loader, pip debug, current InsightFace PyPI artifacts, ONNX Runtime providers and InsightFace model terms. English source review only; no package installation, model load, workflow or GPU run.
01IPAdapter Plus READMESource checked: 2026-09-2602Pinned IPAdapter InsightFace loaderSource checked: 2026-09-2603pip debug referenceSource checked: 2026-09-2604InsightFace PyPI release filesSource checked: 2026-09-2605ONNX Runtime execution providersSource checked: 2026-09-2606InsightFace model guide and termsSource checked: 2026-09-26