.NET Agent Release Notes for v10.42.0

src/content/docs/release-notes/agent-release-notes/net-release-notes/net-agent-10-42-0.mdx

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+---
+subject: .NET agent
+releaseDate: '2025-06-24'
+version: 10.42.0
+downloadLink: 'https://download.newrelic.com/dot_net_agent/latest_release'
+features: ['Add support for Azure Service Bus.']
+bugs: ['Fix Profiler build errors with latest VS.']
+security: []
+---
+
+### Notice
+
+* As of this release, there is a new public key available for apt.newrelic.com at https://download.newrelic.com/NEWRELIC_APT_2DAD550E.public. This key uses a more secure GPG algorithm than the current public key. If you use APT to install or upgrade the agent on APT-based Linux hosts, we recommend that you switch to using the new key, following the instructions found here: https://docs.newrelic.com/install/dotnet/?deployment=linux&docker=noDocker#apt ([1001cf7](https://github.com/newrelic/newrelic-dotnet-agent/commit/1001cf7fc5b250a580dd75168b8440eb86573278))
+
+### New features
+
+* Add support for Azure Service Bus. ([#3124](https://github.com/newrelic/newrelic-dotnet-agent/issues/3124)) ([6a075cc](https://github.com/newrelic/newrelic-dotnet-agent/commit/6a075ccbb2b7b59c509ce93fcad36202d4d5a6da))
+
+### Fixes
+
+* Fix Profiler build errors with latest VS ([#3162](https://github.com/newrelic/newrelic-dotnet-agent/issues/3162)) ([0cfdedb](https://github.com/newrelic/newrelic-dotnet-agent/commit/0cfdedb4ff2a9bfc602f6844e262c2d4d455583a))
+
+### Checksums
+| File | SHA - 256  Hash |
+| ---| ---|
+| newrelic-dotnet-agent-10.42.0-1.x86_64.rpm | 85D32AF90B0C968EEF33631F507197F69DAC510AF9E7BAA3E6F479D74A284907 |
+| newrelic-dotnet-agent_10.42.0_amd64.deb | 2696F55955D7E0300BCF70A1A2EDC8471A1DBACD2361344C4BD5E003FD582F4C |
+| newrelic-dotnet-agent_10.42.0_amd64.tar.gz | AD1B3F3F1D22DD1E539EFAC44B3422654608C26FA72E0BC1D2292D23BBFECC5D |
+| newrelic-dotnet-agent_10.42.0_arm64.deb | 126C8F772AD736D1C771C65FEBE25DC827E9734626220081BA3AE2C153E03935 |
+| newrelic-dotnet-agent_10.42.0_arm64.tar.gz | D087D4A65E1B441C83B5B7D6C6AFC01E88DD87A7358A180DD0B7E3977D52DF64 |
+| NewRelicDotNetAgent_10.42.0_x64.msi | 19C7BC3370F7864257E5870834F3ADFBBD190DE410625B7495631E901508CDFB |
+| NewRelicDotNetAgent_10.42.0_x64.zip | 2102CC1D97014142BB42A69224BA84660018F0510B6E09E19E0E509934742E36 |
+| NewRelicDotNetAgent_10.42.0_x86.msi | FA98CE97BD02246A5D0413ED64C693F5A045827F32A4B9CA62F14B5534638F46 |
+| NewRelicDotNetAgent_10.42.0_x86.zip | 594B7F38FB189EBE24D77A7D5400EB2A80A49E55107B6F00BB006FE96A5CB391 |
+
+
+### Updating your agent
+
+* Follow standard procedures to [update the .NET agent](/docs/agents/net-agent/installation-configuration/update-net-agent).
+* If you're using a particularly old agent, review the list of major changes and procedures for [updating legacy .NET agents](/docs/apm/agents/net-agent/installation/update-net-agent/#updating_older_net).
+
+We recommend updating to the latest agent version as soon as it's available. If you can't upgrade to the latest version, update your agents to a version no more than 90 days old. Read more about [keeping your agent up to date](/docs/new-relic-solutions/new-relic-one/install-configure/update-new-relic-agent).
+See the New Relic .NET agent [EOL policy doc](/docs/apm/agents/net-agent/getting-started/net-agent-eol-policy) for information about agent releases and support dates.
+