#NET9
LightNews LightNews
verkkotunnukset.bsky.social
Verkkotunnus: salibandypaiva.fi
Rekisteröity: 2026-10-28 15:38
Käyttäjä: Superstory
Maa: Suomi
Välittäjä: Net9 Oy
October 28, 2026 at 11:10 PM
barretblake.dev
From the .NET blog...

In case you missed it earlier...

.NET October 2026 Out-of-Band Security Updates
https://devblogs.microsoft.com/dotnet/dotnet-october-2026-oob-security-updates/ #dotnet #MaintenanceUpdates #Security #NET10 #NET11 #NET8 #NET9 #CVE2026111497 #CVE2026114148 #OOB
blog post hero image
October 26, 2026 at 3:15 AM
barretblake.dev
From the .NET blog...

.NET October 2026 Out-of-Band Security Updates
https://devblogs.microsoft.com/dotnet/dotnet-october-2026-oob-security-updates/ #dotnet #MaintenanceUpdates #Security #NET10 #NET11 #NET8 #NET9 #CVE2026111497 #CVE2026114148 #OOB
blog post hero image
October 25, 2026 at 7:00 PM
machaceleste.bsky.social
After working 15 hours today, I fully rebuilt SseClientLib to v0.2.0 and refactored AltStreamLib to v0.3.0 to play nice with it on both the .net9 and .net46 branches

This marks a full refactoring to patch issues I neglected when I first made the Lib in a hurry to get support out there for everyone.
October 20, 2026 at 7:57 AM
donwebmedia.bsky.social
COPY binario en .NET 9: de 2.910 a 15.710 ítems por segundo

¿Cómo lograr una importación masiva PostgreSQL 5,4 veces más rápida en .NET 9? Mirá qué midió un caso real con COPY binario y qué no demuestra

#postgresql #npgsql #net9 #copybinario #entityframeworkcore
COPY binario en .NET 9: de 2.910 a 15.710 ítems por segundo
Un caso real de importación masiva en PostgreSQL 17 con Npgsql: cifras reportadas, límites del benchmark y cuándo conviene dejar EF Core.
donweb.news
October 16, 2026 at 1:21 AM
verkkotunnukset.bsky.social
Verkkotunnus: kattohuolto-huopamestarit.fi
Rekisteröity: 2026-09-22 15:34
Käyttäjä: Bitonic Systems Oy
Maa: Suomi
Välittäjä: Net9 Oy
September 22, 2026 at 10:10 PM
cliffordagius.bsky.social
So I finally fixed my @visualstudio.bsky.social and DotNET MAUI setup on my machines after the Net9 issues. So back working again, thanks to those that helped with blogs etc.
November 15, 2024 at 4:37 PM
cliffordagius.bsky.social
Watching now while I rebuild all my VS22 stuff as MAUI is really broken for me sadly since the Net9 release.
November 15, 2024 at 9:32 AM
cliffordagius.bsky.social
Anyone else having issues with @visualstudio.bsky.social and Dotnet #MAUI after the Net9 release? Both my laptop and desktop machines can no long run existing projects that were Net8 and I can't even get a dotnet new MAUI project to build. Looking for solutions before I throw computers out.
a man sitting at a desk with a computer monitor
ALT: a man sitting at a desk with a computer monitor
media.tenor.com
November 15, 2024 at 9:19 AM
luke.geek.nz
Great week, opened my mind to what can be achieved with Container Apps hosting Semantic Kernel running on NET9, Azure OpenAI with gpt-4o and a static frontend webapp running react and the Microsoft fluent ui framework! For now though, the lawns, grocery shopping and family time.
September 20, 2025 at 1:09 AM
dcs.aitsys.dev
DisCatSharp.Extensions v3.1.0

We added a new extension called SimpleMusicCommands.

The GitHub release can be found here: github.com/Aiko-IT-Syst...
Release v3.1.0 · Aiko-IT-Systems/DisCatSharp.Extensions
What's Changed Bump net9 to 9.x by @Lulalaby in #97 chore!: removed .NET 7 support by @Lulalaby in #98 feat: DisCatSharp.Extensions.SimpleMusicCommands DisCatSharp.Extensions v3.1.0 Release by @L...
github.com
January 27, 2025 at 1:02 AM
japj.bsky.social
Does that require net9? I think I remember reading about some GC server improvements related to net9
February 6, 2025 at 4:00 PM
dotnetbot.bsky.social
dotnet watch crash with Aspire and BlazorWASM (115372) https://github.com/dotnet/runtime/issues/115372
dotnet watch crash with Aspire and BlazorWASM · Issue #115372 · dotnet/runtime
Description We have a solution with Aspire which worked well with dotnet watch command until net9 (net8 never thrown exception). Today after some attempts on try to reproduce with less projects as ...
github.com
May 7, 2025 at 4:29 PM
dotnetbot.bsky.social
MemoryCache creates lots of tasks that cause CPU/Memory spikes on compaction in net8 LTS. (115142) https://github.com/dotnet/runtime/issues/115142
MemoryCache creates lots of tasks that cause CPU/Memory spikes on compaction in net8 LTS. · Issue #115142 · dotnet/runtime
Hello, we are experiencing the same performance issue (efcore 8 using memorycache) as was solved in #97736. The problem is that the fix is available only in net9+. We are using net8 LTS. The fix it...
github.com
April 29, 2025 at 8:47 AM
dotnetbot.bsky.social
Faster Exceptions: unmanaged exception handling in C++/CLI (114727) https://github.com/dotnet/runtime/issues/114727
Faster Exceptions: unmanaged exception handling in C++/CLI · Issue #114727 · dotnet/runtime
Description With .NET9 Faster Exceptions, the exception handling for unmanaged types is broken in C++/CLI. The issue can be described with these code: // C++/CLI try { throw std::exception(); } cat...
github.com
April 16, 2025 at 7:14 AM
dotnetbot.bsky.social
[net9] System.Private.CoreLib occurs InvalidOperationException and InvalidCastException (114262) https://github.com/dotnet/runtime/issues/114262
[net9] System.Private.CoreLib occurs InvalidOperationException and InvalidCastException · Issue #114262 · dotnet/runtime
Description reproduces absolutely randomly both in debug and in release mode, appeared after switching from net8-ios to net9-ios (It doesn't seem like it applies to iOS) stacktrace of InvalidCastEx...
github.com
April 4, 2025 at 1:29 PM
dotnetbot.bsky.social
Apple Sillicon Rosetta2 .NET9 deadlock (114206) https://github.com/dotnet/runtime/issues/114206
Apple Sillicon Rosetta2 .NET9 deadlock · Issue #114206 · dotnet/runtime
Description Hello, we are developing MVVM cross-platform desktop app using .NET and Avalonia UI (v11.0.11) and we are experiencing random deadlocks in xUnit tests (UI tests using Avalonia Headless ...
github.com
April 3, 2025 at 12:32 PM
dotnetbot.bsky.social
在一个EXE应用程序中调用多个由.NET9 AOT发布的动态库so文件会引发异常 (114193) https://github.com/dotnet/runtime/issues/114193
在一个EXE应用程序中调用多个由.NET9 AOT发布的动态库so文件会引发异常 · Issue #114193 · dotnet/runtime
Description 在一个EXE应用程序中调用多个由.NET9 AOT发布的动态库so文件会引发异常 Reproduction Steps AOT编译命令： C语言调用代码： 调用结果： Expected behavior 在一个EXE中应该是允许调用多个由.NET AOT编译的动态库的 Actual behavior 在一个EXE中应该是允许调用多个由.NET AOT编译的动态库时会报...
github.com
April 3, 2025 at 3:42 AM
dotnetbot.bsky.social
Invalid certificate verification on Mac leading to `The remote certificate is invalid because of errors in the certificate chain: RevocationStatusUnknown` errors` (113971) https://github.com/dotnet/runtime/issues/113971
Invalid certificate verification on Mac leading to `The remote certificate is invalid because of errors in the certificate chain: RevocationStatusUnknown` errors` · Issue #113971 · dotnet/runtime
Description The issue is present only on Mac Os. It has been tested on MacOs 15.3.2. It was tested on .net8 and .net9. On Windows or Linux everything works well. There is an issue with verifying so...
github.com
March 27, 2025 at 3:54 PM
dotnetbot.bsky.social
MONO_WASM: jit_call code generation failed in Blazor WASM project (113657) https://github.com/dotnet/runtime/issues/113657
MONO_WASM: jit_call code generation failed in Blazor WASM project · Issue #113657 · dotnet/runtime
Description We have a Blazor wasm project which after upgrade to net9 (same build with net8 works well) throws this type of error during normal usage BUT ONLY in production. MONO_WASM: jit_call cod...
github.com
March 18, 2025 at 5:06 PM
dotnetbot.bsky.social
`Assembly.GetType(string, bool, bool)` throws unexpected `FileLoadException` on NET9 (113534) https://github.com/dotnet/runtime/issues/113534
`Assembly.GetType(string, bool, bool)` throws unexpected `FileLoadException` on NET9 · Issue #113534 · dotnet/runtime
Description When using Assembly.GetType(string, bool, bool) (in NET9) you can get unexpected FileLoadException depending on the input. Depending on the passed in string parameter the method either ...
github.com
March 14, 2025 at 2:20 PM
dotnetbot.bsky.social
Signal SIGILL (Illegal instruction) code ILL_ILLOPN (Illegal operand) after migrate to .net9 (112897) https://github.com/dotnet/runtime/issues/112897
Signal SIGILL (Illegal instruction) code ILL_ILLOPN (Illegal operand) after migrate to .net9 · Issue #112897 · dotnet/runtime
Description We are currently migrating to .net9 and after some the our application crashes without any exception. At first i found this message in the journal of our ubuntu 22.04: kernel: traps: .N...
github.com
February 25, 2025 at 7:21 AM
dotnetbot.bsky.social
MemoryCache: use net9.cs file rather than #if for TFM limits (112786) https://github.com/dotnet/runtime/pull/112786
MemoryCache: use net9.cs file rather than #if for TFM limits by mgravell · Pull Request #112786 · dotnet/runtime
Follow-up to #112695, addressing #if usage in /ref/ files /cc @stephentoub
github.com
February 21, 2025 at 3:52 PM
dotnetbot.bsky.social
.Net9 - Inconsistent result for GZipStream compression between Windows and Linux (Ubuntu/WSL) (112770) https://github.com/dotnet/runtime/issues/112770
.Net9 - Inconsistent result for GZipStream compression between Windows and Linux (Ubuntu/WSL) · Issue #112770 · dotnet/runtime
Description Using .Net 9, I use a method to compress a string and Base64 the compression result. I wrote a non regression unit test, but it fails under Linux. After investigating, it seems that com...
github.com
February 20, 2025 at 11:59 PM
dotnetbot.bsky.social
.Net9 Android Release Precompiling failed (111200) https://github.com/dotnet/runtime/issues/111200
.Net9 Android Release Precompiling failed · Issue #111200 · dotnet/runtime
Description Hello, i got the following error building my .Net 9 Maui Android Project in Release. With .Net8 everything ran fine. Details [60/218] Plotly.NET.dll -> Plotly.NET.dll.so, Plotly.NET.dll...
github.com
January 8, 2025 at 2:33 PM