Upgrade to .NET 11 RC2

Target net11.0 with SDK 11.0.100-rc.2.26504.105 across projects, CI,
Docker images, and dev tooling, and move framework-aligned packages to
11.0.0-rc.2. Microsoft.AspNetCore.OpenApi 11 requires Microsoft.OpenApi
3.x, so adapt the transformers to the media type interfaces and keep the
published document on OpenAPI 3.1. Refresh Foundatio, test SDK, and time
provider testing packages.

Drop the Microsoft.Extensions.Logging.Abstractions reference now that it
ships in the shared framework, and disable static web assets in the test
project so the Web and Job dotnet-watch assets added in RC2 don't collide.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

Author: ejsmith

.codex/environments/environment.toml

@@ -22,7 +22,7 @@ worktree_path="$PWD"
 echo "Setting up Exceptionless Aspire worktree: $worktree_path"
 
 if ! command -v dotnet >/dev/null 2>&1; then
-  echo "dotnet is not installed or not on PATH. Exceptionless requires .NET 10." >&2
+  echo "dotnet is not installed or not on PATH. Exceptionless requires .NET 11." >&2
   exit 1
 fi
 

.devcontainer/devcontainer.json

@@ -66,7 +66,7 @@
             "version": "latest"
         },
         "ghcr.io/devcontainers/features/dotnet:2": {
-            "version": "10.0"
+            "version": "11.0-preview"
         },
         "ghcr.io/devcontainers/features/node:1": {
             "nodeGypDependencies": true,

.github/workflows/build-arm64.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
       - name: Build Reason
         env:
           GITHUB_EVENT: ${{ toJson(github) }}

.github/workflows/build.yaml

@@ -114,7 +114,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
 
       - name: Version
         id: version
@@ -156,7 +156,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
 
       - uses: actions/cache@v6
         with:
@@ -215,7 +215,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
 
       - name: Merge coverage
         run: |
@@ -327,8 +327,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
-          dotnet-quality: ga
+          dotnet-version: 11.0.100-rc.2.26504.105
 
       - name: Install Aspire CLI
         run: |

.github/workflows/copilot-setup-steps.yml

@@ -25,7 +25,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
 
       - name: Install Aspire CLI
         run: |

.github/workflows/elasticsearch-docker-8.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Setup .NET Core
         uses: actions/setup-dotnet@v6
         with:
-          dotnet-version: 10.0.402
+          dotnet-version: 11.0.100-rc.2.26504.105
       - name: Build Reason
         env:
           GITHUB_EVENT: ${{ toJson(github) }}

.vscode/launch.json

@@ -12,7 +12,7 @@
             "type": "coreclr",
             "request": "launch",
             "preLaunchTask": "build",
-            "program": "${workspaceFolder}/src/Exceptionless.Web/bin/Debug/net10.0/Exceptionless.Web.dll",
+            "program": "${workspaceFolder}/src/Exceptionless.Web/bin/Debug/net11.0/Exceptionless.Web.dll",
             "args": [],
             "cwd": "${workspaceFolder}/src/Exceptionless.Web",
             "stopAtEntry": false,
@@ -29,7 +29,7 @@
             "type": "coreclr",
             "request": "launch",
             "preLaunchTask": "build",
-            "program": "${workspaceFolder}/src/Exceptionless.Job/bin/Debug/net10.0/Exceptionless.Job.dll",
+            "program": "${workspaceFolder}/src/Exceptionless.Job/bin/Debug/net11.0/Exceptionless.Job.dll",
             "args": [],
             "cwd": "${workspaceFolder}",
             "stopAtEntry": false,

AGENTS.md

@@ -1,6 +1,6 @@
 # Exceptionless
 
-Real-time error monitoring platform on .NET 10, Aspire, and Svelte 5. Keep changes readable, narrow, and backwards compatible.
+Real-time error monitoring platform on .NET 11, Aspire, and Svelte 5. Keep changes readable, narrow, and backwards compatible.
 
 This file is root-scope agent guidance. When working in a subtree, read any nested `AGENTS.md` there too. Prefer nearby repo skills for detailed backend, frontend, testing, repository, and dogfood workflows.
 

Dockerfile

@@ -1,4 +1,4 @@
-FROM mcr.microsoft.com/dotnet/sdk:10.0.402 AS build
+FROM mcr.microsoft.com/dotnet/sdk:11.0.100-rc.2 AS build
 ARG MinVerVersionOverride
 WORKDIR /app
 
@@ -40,7 +40,7 @@ RUN dotnet publish -c Release -o out --no-build
 
 # job
 
-FROM mcr.microsoft.com/dotnet/aspnet:10.0.13 AS job
+FROM mcr.microsoft.com/dotnet/aspnet:11.0.0-rc.2 AS job
 WORKDIR /app
 COPY --from=job-publish /app/src/Exceptionless.Job/out ./
 
@@ -59,7 +59,7 @@ RUN dotnet publish -c Release -o out --no-build /p:SkipSpaPublish=true
 
 # api
 
-FROM mcr.microsoft.com/dotnet/aspnet:10.0.13 AS api
+FROM mcr.microsoft.com/dotnet/aspnet:11.0.0-rc.2 AS api
 WORKDIR /app
 COPY --from=api-publish /app/src/Exceptionless.Web/out ./
 
@@ -77,7 +77,7 @@ RUN dotnet publish -c Release -o out --no-build
 
 # app
 
-FROM mcr.microsoft.com/dotnet/aspnet:10.0.13 AS app
+FROM mcr.microsoft.com/dotnet/aspnet:11.0.0-rc.2 AS app
 
 WORKDIR /app
 COPY --from=app-publish /app/src/Exceptionless.Web/out ./
@@ -145,7 +145,7 @@ USER elasticsearch
 
 RUN wget https://dot.net/v1/dotnet-install.sh -O dotnet-install.sh && \
     chmod +x dotnet-install.sh && \
-    ./dotnet-install.sh --version 10.0.13 --runtime aspnetcore && \
+    ./dotnet-install.sh --version 11.0.0-rc.2.26504.105 --runtime aspnetcore && \
     rm dotnet-install.sh
 
 EXPOSE 8080 9200

README.md

@@ -31,7 +31,7 @@ _In appreciation for anyone who submits a non-trivial pull request, we will give
 Start here:
 
 1. Read the [contributing document](https://github.com/exceptionless/Exceptionless/blob/main/CONTRIBUTING.md).
-2. Install [Docker](https://www.docker.com/get-docker), [.NET 10.0](https://dotnet.microsoft.com/), and [Node 24+](https://nodejs.org/).
+2. Install [Docker](https://www.docker.com/get-docker), [.NET 11.0](https://dotnet.microsoft.com/), and [Node 24+](https://nodejs.org/).
 3. Run the app with one of these entry points:
     - Visual Studio Code: open the repo root and start the `Aspire` launch configuration.
     - Visual Studio: open `Exceptionless.slnx`, set `Exceptionless.AppHost` as the startup project, and run it.