[release/10.0] Fix shutdown hang with IIS#65761
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wtgodbe merged 5 commits intorelease/10.0from Mar 16, 2026
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Merging on red while we wait for resolution on the win-vs2022 queue |
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Backport of #65733 to release/10.0
/cc @BrennanConroy
Fix shutdown hang with IIS
Description
Fixes #65436
dotnet/runtime#116652 revealed what is probably a latent bug in IIS/WAS/Windows where if
Preload Enabled = truefor your IIS application then machine shutdown can hang forever due to the default 30 second delay blocking the w3wp process from being closed which allows a new w3wp process time to start up, rinse and repeat.This PR is using a custom
IHostLifetimethat effectively revertsConsoleLifetimeto the pre-10.0 behavior of not blocking for 30 seconds to workaround whatever bug exists in the lower layers. I have pinged an IIS dev about this, and will push on a solution from that end outside of this change.Customer Impact
Multiple customers reported this issue (not sure why it happened around the 10.0.3 timeframe since the bug has been around since 10.0-p7). Impact is that machines wont shutdown if
Preload Enabled = true, so customers need to either disable preload, or add custom code to handle SIGTERM type events differently.Regression?
Regressed from 9.0
Risk
Minimal change to get things back to the state they were in before 10.0.
Verification
Packaging changes reviewed?