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The NUGET_ENABLE_ENHANCED_HTTP_RETRY environment variable no longer has any effect in .NET 10. Previously, this environment variable could be used to disable exponential retry back-off for failed HTTP calls in NuGet operations.
Version introduced
.NET 10 Preview 6
Previous behavior
When the NUGET_ENABLE_ENHANCED_HTTP_RETRY environment variable was set to false, NuGet used the old retry behavior with a fixed 200ms delay between failed HTTP calls instead of exponential back-off.
New behavior
The NUGET_ENABLE_ENHANCED_HTTP_RETRY environment variable has no effect. NuGet always uses exponential retry back-off for failed HTTP calls, which has been the default behavior since .NET SDK 6.0.300.
Type of breaking change
This is a behavioral change.
Reason for change
Exponential retry back-off has been the default behavior for nearly 4 years since .NET SDK 6.0.300. The feature was introduced to help when restores overwhelmed servers that couldn't handle all package requests, and exponential retry allowed these requests to succeed. Since there has been no feedback indicating issues with this approach, the fallback option has outlived its utility.
Recommended action
No action is required.
Affected APIs
None.
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