Reproduction steps:
1. Create a new project
2. Open Package Manager (Window → Package Management → Package Manager)
3. Install Deployment (com.unity.services.deployment) and Cloud Code (com.unity.services.cloudcode) packages
4. Open Deployment window (Services → Deployment)
5. Follow the instructions given by the window to set up the project
6. In the Assets window, create Cloud Code C# Module Reference asset by right-clicking in the window, and selecting Create → Services → Cloud Code C# Module Reference (asset with .ccmr extension will be created)
7. Select the asset in the Assets window
8. In the Inspector window on the right, press “Generate solution”
9. Go back to the Deployment window
10. Try to deploy the module (e.g., right-click the .ccmr asset and press “Deploy Selected” button at the top of the Cloud Code deployment window).
11. Observe the result in the Cloud Code deployment and Console windows. (Repeat step 3 a few times if it deployment succeeds initially, as the issue occurs inconsistently).

Actual result: The deployment fails at 67% with error “UnexpectedRemoteStatusCodeException: Received unexpected status code from cloud code server: 0 0”
Expected result: The module deploys successfully

Reproducible in: 2.5.0(6000.0.73f1), 3.0.0-exp.4(6000.0.73f1, 6000.3.13f1, 6000.4.3f1, 6000.5.0b4, 6000.6.0a3)
Not reproducible in: 2.4.0 (.ccmr files are not available)

Reproducible on: Windows 11, macOS 26.3.1 (M3 Pro)
Not reproducible on: No other environments tested

Notes:
- Tested with Deployment package (com.unity.services.deployment) 1.0.0-pre.4-1.7.2
- The issue is not limited to a specific project/module and can be reproduced in a new project that was configured for Cloud Code module deployment by following the official guide https://www.youtube.com/watch?v=l_iD06qOu6Q
- Checking the Editor.log reveals error “Curl error 28: Operation timed out after 10006 milliseconds with 0 bytes received[CloudCodeAuthoring]: Received unexpected status code from cloud code server: 0 0”
- Downgrading the same project decreases the probability of reproduction. It is advised to create and set up a new project to reproduce in a different version of the Unity Editor
- Does not reproduce with Cloud Code Js Script asset