akka.net

#### 1.5.58 January 8th, 2026 #### Akka.NET v1.5.58 is a maintenance release with important bug fixes and performance improvements. **.NET 10 Compatibility Fix** * [Fix .NET 10 CLR shutdown hook breaking change](https://github.com/akkadotnet/akka.net/pull/7964) - Resolves an issue where the CLR shutdown hook behavior changed in .NET 10, ensuring graceful actor system termination works correctly. **Bug Fixes** * [Fix TcpListener to not stop accepting connections on transient accept errors](https://github.com/akkadotnet/akka.net/pull/7970) - The `TcpListener` now properly handles transient socket accept errors without stopping to accept further connections. * [Fix race condition in cluster sharding when entity constructor fails](https://github.com/akkadotnet/akka.net/pull/7981) - Resolves a race condition that could occur when an entity actor's constructor throws an exception. * [Fix race condition in QueueSink causing async enumerable timeout](https://github.com/akkadotnet/akka.net/pull/7973) - Fixes a race condition in `QueueSink` that could cause timeouts when using async enumerables. * [Make RemotingTerminator non-FSM to avoid racy FSM log init](https://github.com/akkadotnet/akka.net/pull/7967) - Fixes potential race conditions during actor system shutdown logging. **Performance Improvements** * [LogMessage GetProperties without FrozenDictionary](https://github.com/akkadotnet/akka.net/pull/7968) - Improves semantic logging performance by avoiding FrozenDictionary allocations in hot paths. * [Skip parsing PropertyNames when empty Parameters](https://github.com/akkadotnet/akka.net/pull/7960) - Additional logging optimization that skips unnecessary parsing when log messages have no parameters. **New Features** * [Akka.TestKit: configurable expect-no-message-default value](https://github.com/akkadotnet/akka.net/pull/7006) - Fixes [issue #6675](https://github.com/akkadotnet/akka.net/issues/6675). You can now configure the default timeout for `ExpectNoMsg()` via HOCON: ```hocon akka.test.expect-no-message-default = 100ms ``` 6 contributors since release 1.5.57 | COMMITS | LOC+ | LOC- | AUTHOR | |---------|------|------|---------------------| | 7 | 158 | 36 | Aaron Stannard | | 2 | 483 | 55 | Gregorius Soedharmo | | 2 | 11 | 41 | Rolf Kristensen | | 1 | 100 | 22 | Yaroslav Paslavskiy | | 1 | 37 | 53 | Jarkko Pöyry | | 1 | 11 | 2 | Petri Kero | ## Changes: * c51ab05820fa4e292106715b979fded4ed6dd2a2 Add release notes for Akka.NET v1.5.58 (#7985) * 45e7f45871ae7a33ce0ce258fb45fead1a6557f0 Update API approval list * cca19865c611ffe10704a9b4dee1df03bda0d2a8 LogMessage GetProperties without FrozenDictionary (#7968) * b22808e3baa19f376c982d0f9655027ac1c9fc39 Akka.TestKit: configurable expect-no-message-default value #6675 (#7006) * efd3f0da8c42e05bee050a7b9854289075fde8ed Fix .NET 10 CLR shutdown hook breaking change (#7964) * 8027265086d36c9737a86f499201b377bc61061e Make RemotingTerminator non-FSM to avoid racy FSM log init. (#7967) * 0e8480e18f836a5b705cc8dd7fe6bc23ee6c9880 Fix timing race in BackpressureTimeout_must_succeed_if_subscriber_demand_arrives test (#7972) * 8aad0c3c9d45819ed6067bfa748151181ff72751 Fix race condition in QueueSink causing async enumerable timeout (#7973) * feb1102edf71b694df9bd3b4f08e0fd063a8e265 Fix race condition in multi-producer sharding delivery test (#7975) * 25cef789d726dc8cd012a85c0b5fcbef9d26b236 Fix WithinAsync timeout not propagating to EventFilter across async boundaries (#7977) See More * 2085bd656b4f669a35470345e0f93317390b4b10 fix(cluster.tools): fix race condition in DistributedPubSubRestartSpec actor creation (#7980) * c9a0e91e62a3e4df3ff3bfc2a8ad390b2f57809b Fix race condition in cluster sharding when entity constructor fails (#7981) [ #7979 ] * 0b43b2631bfe95c5cd53b09b924f0c96afb70ba3 Fix `TcpListener` to not stop from accepting further connections on transient accept errors (#7970) * cbc6ee2213b15409f79702807d1fabe4ba78d4b3 Skip parsing PropertyNames when empty Parameters (#7960) This list of changes was [auto generated](https://dev.azure.com/dotnet/Akka.NET/_build/results?buildId=122255&view=logs).

akka.net

Akka.NET v1.5.58

1.5.58 January 8th, 2026

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