AttributeError: module 'omni.usd' has no attribute 'UsdContext'

Omniverse Isaac Sim
1

Isaac Sim Version

5.0.0
4.5.0
4.2.0
4.1.0
4.0.0
4.5.0
2023.1.1
2023.1.0-hotfix.1
Other (please specify):

Operating System

Ubuntu 22.04
Ubuntu 20.04
Windows 11
Windows 10
Other (please specify):

GPU Information

  • Model: NVIDIA GeForce RTX 5080
  • Driver Version: 575.64.03

Topic Description

Detailed Description

Thanks for updating IsaacSim. As usual, I ran into an issue starting the simulation right after installing it.

I followed this tutorial to install IsaacSim via pip:

After installation, I was able to launch IsaacSim once, but it hasn’t worked since. Here’s the log output.

AttributeError: module 'omni.usd' has no attribute 'UsdContext'

Steps to Reproduce

  1. pip install isaacsim[all,extscache]==5.0.0 --extra-index-url https://pypi.nvidia.com

  2. python -m isaacsim --generate-vscode-settings

  3. isaacsim

Error Messages

log.txt (22.0 KB)

Screenshots or Videos

Screenshot from 2025-08-11 22-59-44
Screenshot from 2025-08-11 22-59-441920×1060 232 KB

Additional Information

What I’ve Tried

Reinstall multiple times

2

Ok after consulting with ChatGPT, I found the solution. If anyone has the same problem, you can consider this one:

Clear Isaac Sim’s extscache in the venv (this is where the compiled extension shims live)

rm -rf ~/path/to/python3.11/site-packages/isaacsim/extscache