Summary
Auto-Rigging the face of an in-editor MetaHuman Character consistently fails. The request reaches the server and receives a job ID, but polling for the result times out and returns ‘Server Error’. Because the rig never completes, no assembled Blueprint is generated and the character cannot be placed in a level.
What Type of Bug are you experiencing?
Animation
Steps to Reproduce
Open Unreal Engine 5.7.4, create or open a project with the MetaHuman plugin enabled.
Go to Content Browser → Add → MetaHuman Character, or open an existing in-editor MetaHuman Character asset.
In the MetaHuman Character Editor, go to the Head tab and adjust any facial features (Blend, Sculpt, or Move tools) to customize the character.
Click the download/texture icon to request texture sources (Face: Albedo/Normal/Cavity, Body: Albedo/Normal/Cavity/Masks).
Observe the texture download either hangs or fails with “Download of source face/body textures failed with code ‘Server Error’” after roughly 300 seconds.
Regardless of step 5’s outcome, click Auto-Rig (or the rig icon) to generate the face rig, with Rig Type set to “Joints Only.”
The system sends a POST request to mh-uemhc-autorig-service.eeeb.live.use1a.on.epicgames.com/v1/autorigs and receives a job ID successfully.
The editor then polls the job status via GET requests every ~10 seconds.
After several polling attempts (roughly 3-5 minutes), the request times out and the editor logs: “Auto-Rigging of Face failed with code ‘Server Error’”.
Because the rig never completes, no Blueprint character asset is generated in the Content Browser, and the MetaHuman cannot be placed in a level.
Expected Result
rig completes, assembled Blueprint of metahuman
Observed Result
Giving error Auto-Rigging of Face failed with code ‘Server Error’
Affects Versions
5.7
Platform(s)
Windows
For crash reports, include your callstack
LogMetaHumanCharacterEditor: Display: Auto-Rigging Face Mesh
LogHttp: Warning: verb=[POST] url=[https://mh-uemhc-autorig-service.eeeb.live.use1a.on.epicgames.com/v1/autorigs] status=Processing
LogHttp: Warning: verb=[GET] url=[…/v1/autorigs/?waitSeconds=10] status=Processing
LogMetaHumanCharacterEditor: Error: Auto-Rigging of Face failed with code ‘Server Error’
Additional Notes
What I tried (did NOT resolve):
- Confirmed IPv4 enabled on the network adapter.
- Changed DNS to 8.8.8.8 / 8.8.4.4.
- Logged out and back into Epic account inside the editor (log confirms ‘Login complete: EOS_Success’, user authenticated).
- Set head Global Alpha to 0.99.
- Downloaded texture sources first — these also fail with ‘Download of source face/body textures failed with code Server Error’.
- Checked Epic status page — MetaHuman Creator listed as Operational at the time of failure.
The failure appears intermittent and server-side: the job is accepted but never returns a completed rig.
Happy to provide full logs, MRQ config, and a sample project on request.