CI failed to access NuGet feeds because of rate limiting

Author: svickCreated Sep 10, 2026Updated Sep 19, 2026

Labelsuntriagedblocking-clean-ciKnown Build Errorarea-Infrastructure

Build Information

Build: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590848&view=logs&j=01892749-73bf-5d15-0263-2867442342a5&t=265a9b67-22f6-5aea-ca0d-05593fbc5c94 Build error leg or test failing: MachineLearning-CI / Windows_x64_NetFx48 / Windows_x64_NetFx48 Debug_Build / Build Packages Pull request: https://github.com/dotnet/machinelearning/pull/7704

Error Message

DO NOT USE JSON BELOW IF THIS IS A BUILD BREAK otherwise build analysis will allow pull requests to merge that break the build worse. For a build break, do not use this issue form. Make a regular new issue.

Fill the error message using step by step known issues guidance.

json

{
  "ErrorMessage": "error NU1301:   Response status code does not indicate success: 500 (Internal Server Error - Request was blocked due to exceeding usage of resource 'ATCPU' in namespace 'IPAddress'.",
  "BuildRetry": false,
  "ExcludeConsoleLog": false
}

D:\a\_work\1\s\src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/MachineLearning/nuget/v3/index.json.
##[error]src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/MachineLearning/nuget/v3/index.json.
D:\a\_work\1\s\src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
##[error]src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
D:\a\_work\1\s\src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
##[error]src\Native\Native.proj(3,3): error : Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
D:\a\_work\1\s\src\Native\Native.proj(3,3): error : Error occurred while getting package vulnerability data: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
##[error]src\Native\Native.proj(3,3): error : Error occurred while getting package vulnerability data: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
  Determining projects to restore...
  Determining projects to restore...
D:\a\_work\1\s\src\Native\Native.proj : error NU1301: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json. [D:\a\_work\1\s\.dotnet\sdk\11.0.100-rc.1.26420.103\NuGet.targets]
D:\a\_work\1\s\src\Native\Native.proj : error NU1301:   Response status code does not indicate success: 500 (Internal Server Error - Request was blocked due to exceeding usage of resource 'ATCPU' in namespace 'IPAddress'. For more information on why your request was blocked, see the topic "Rate limits" on the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=823950). (DevOps Activity ID: BC1A7C54-8D45-4A8E-B891-5E2EC9F02A2C)). [D:\a\_work\1\s\.dotnet\sdk\11.0.100-rc.1.26420.103\NuGet.targets]
##[error]src\Native\Native.proj(0,0): error NU1301: Unable to load the service index for source https://pkgs.dev.azure.com/dnceng/public/_packaging/machinelearning-assets/nuget/v3/index.json.
  Response status code does not indicate success: 500 (Internal Server Error - Request was blocked due to exceeding usage of resource 'ATCPU' in namespace 'IPAddress'. For more information on why your request was blocked, see the topic "Rate limits" on the Microsoft Web site (https://go.microsoft.com/fwlink/?LinkId=823950). (DevOps Activity ID: BC1A7C54-8D45-4A8E-B891-5E2EC9F02A2C)).
  Failed to restore D:\a\_work\1\s\src\Native\Native.proj (in 9.13 sec).

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590849 Error message validated: [error NU1301: Response status code does not indicate success: 500 (Internal Server Error - Request was blocked due to exceeding usage of resource 'ATCPU' in namespace 'IPAddress'.] Result validation: :x: Known issue did not match with the provided build. Validation performed at: 9/10/2026 2:28:50 PM UTC

Known issue validation

Build: :mag_right: https://dev.azure.com/dnceng-public/public/_build/results?buildId=1590848 Error message validated: [error NU1301: Response status code does not indicate success: 500 (Internal Server Error - Request was blocked due to exceeding usage of resource 'ATCPU' in namespace 'IPAddress'.] Result validation: :white_check_mark: Known issue matched with the provided build. Validation performed at: 9/10/2026 2:31:29 PM UTC

Report

Build	Repository	Step Name	Console log	Pull Request
1590848	dotnet/machinelearning	Build Packages	Log	dotnet/machinelearning#7704

Summary

24-Hour Hit Count	7-Day Hit Count	1-Month Count
0	0	1

Source: dotnet/machinelearning

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