diff --git a/.github/workflows/build-test.yml b/.github/workflows/build-test.yml
index 8b6b5556b29..6d536d58cef 100644
--- a/.github/workflows/build-test.yml
+++ b/.github/workflows/build-test.yml
@@ -4,8 +4,7 @@
 
 name: Build and Test
 
-permissions:
-  deployments: write
+permissions: {}
 
 on:
   pull_request:
@@ -51,207 +50,14 @@ jobs:
   # Make sure to cancel previous runs on a push
   cancel_previous_runs:
     runs-on: ubuntu-latest
+    permissions:
+      actions: write
     steps:
       - name: Cancel Previous Runs
-        uses: styfle/cancel-workflow-action@0.12.1
+        uses: styfle/cancel-workflow-action@85880fa0301c86cca9da44039ee3bb12d3bedbfa # 0.12.1
         with:
           access_token: ${{ github.token }}
 
-  build-vsix:
-    name: Build VSIX
-    runs-on: ubuntu-latest
-    if: github.repository == 'microsoft/vscode-jupyter'
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Use Node ${{env.NODE_VERSION}}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{env.NODE_VERSION}}
-
-      - name: Use Npm ${{env.NPM_VERSION}}
-        run: npm i -g npm@${{env.NPM_VERSION}}
-
-      - name: Use Python ${{env.PYTHON_VERSION}}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{env.PYTHON_VERSION}}
-
-      # Caching of npm packages (https://github.com/actions/cache/blob/main/examples.md#node---npm)
-      - name: Cache npm on linux/mac
-        uses: actions/cache@v4
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-
-      - run: npm i -g @vscode/vsce
-
-      - name: Build VSIX
-        uses: ./.github/actions/build-vsix
-        id: build-vsix
-
-      - uses: actions/upload-artifact@v4
-        with:
-          name: 'ms-toolsai-jupyter-insiders.vsix'
-          path: 'ms-toolsai-jupyter-insiders.vsix'
-
-  lint:
-    name: Lint
-    runs-on: ubuntu-latest
-    if: github.repository == 'microsoft/vscode-jupyter'
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Use Node ${{env.NODE_VERSION}}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{env.NODE_VERSION}}
-
-      - name: Use Npm ${{env.NPM_VERSION}}
-        run: npm i -g npm@${{env.NPM_VERSION}}
-
-      - name: Cache pip files
-        uses: actions/cache@v4
-        with:
-          path: ~/.cache/pip
-          key: ${{runner.os}}-${{env.CACHE_PIP_DEPS}}-${{env.PYTHON_VERSION}}
-
-      - name: Cache npm files
-        uses: actions/cache@v4
-        with:
-          path: ~/.npm
-          key: ${{runner.os}}-${{env.CACHE_NPM_DEPS}}-${{hashFiles('package-lock.json')}}
-
-      - name: Cache the out/ directory
-        uses: actions/cache@v4
-        with:
-          path: ./out
-          key: ${{runner.os}}-${{env.CACHE_OUT_DIRECTORY}}-${{hashFiles('src/**')}}
-
-      # This is faster than running `npm ci`, we do not want to build zmq, etc.
-      # Let that happen in other jobs, this job needs to be fast
-      - name: npm ci
-        run: npm ci --ignore-scripts --prefer-offline --no-audit
-
-      - name: npm run postinstall
-        run: npm run postinstall
-
-      - name: Verify Translation files
-        run: npm run validateTranslationFiles
-
-      - name: Run linting on TypeScript code (eslint)
-        run: npm run lint
-
-      - name: Run prettier on JavaScript code
-        run: npm run format-check
-
-      - name: Use Python ${{env.PYTHON_VERSION}}
-        uses: actions/setup-python@v5
-        with:
-          python-version: ${{env.PYTHON_VERSION}}
-
-      - name: Run Black on Python code
-        run: |
-          python -m pip install click==8.0.4
-          python -m pip install -U black
-          python -m black . --check
-        working-directory: pythonFiles
-
-      - name: Run gulp prePublishNonBundle
-        run: npm run prePublishNonBundle
-
-      - name: Check dependencies
-        run: npm run checkDependencies
-
-      - name: Check changes to package-lock.json
-        run: npx gulp validatePackageLockJson
-
-      - name: Validate TELEMETRY files
-        run: npm run validateTelemetry
-
-      - name: Verify usage of new Proposed API
-        if: github.event_name == 'pull_request'
-        run: npx tsx ./build/verifyProposedApiUsage.ts
-        env:
-          PULL_REQUEST_SHA: ${{ github.sha }}
-          BASE_SHA: ${{ github.event.pull_request.base.sha }}
-
-  ts_tests:
-    name: Type Script Tests
-    runs-on: ${{ matrix.os }}
-    if: github.repository == 'microsoft/vscode-jupyter'
-    strategy:
-      fail-fast: false
-      matrix:
-        os: ['ubuntu-latest', 'windows-latest']
-        test-suite: [ts-unit]
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Use Node ${{env.NODE_VERSION}}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{env.NODE_VERSION}}
-
-      - name: Use Npm ${{env.NPM_VERSION}}
-        run: npm i -g npm@${{env.NPM_VERSION}}
-
-      # Caching of npm packages (https://github.com/actions/cache/blob/main/examples.md#node---npm)
-      - name: Cache npm on linux/mac
-        uses: actions/cache@v4
-        if: matrix.os != 'windows-latest'
-        with:
-          path: ~/.npm
-          key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-          restore-keys: |
-            ${{ runner.os }}-node-
-
-      - name: Get npm cache directory
-        if: matrix.os == 'windows-latest'
-        id: npm-cache
-        run: |
-          echo "dir=$(npm config get cache)" >> $GITHUB_OUTPUT
-      #   - name: Cache npm on windows
-      #     uses: actions/cache@v4
-      #     if: matrix.os == 'windows-latest'
-      #     with:
-      #       path: ${{ steps.npm-cache.outputs.dir }}
-      #       key: ${{ runner.os }}-node-${{ hashFiles('**/package-lock.json') }}
-      #       restore-keys: |
-      #         ${{ runner.os }}-node-
-
-      - name: Cache compiled TS files
-        # Use an id for this step so that its cache-hit output can be accessed and checked in the next step.
-        id: out-cache
-        uses: actions/cache@v4
-        with:
-          path: ./out
-          key: ${{runner.os}}-${{env.CACHE_OUT_DIRECTORY}}-${{hashFiles('src/**')}}
-
-      # This is faster than running `npm ci`, we do not want to build zmq, etc.
-      # Let that happen in other jobs, this job needs to be fast
-      - name: npm ci
-        run: npm ci --ignore-scripts --prefer-offline --no-audit
-
-      - name: npm run postinstall
-        run: npm run postinstall
-
-      - name: Compile if not cached
-        run: npm run prePublishNonBundle
-        if: steps.out-cache.outputs.cache-hit != 'true'
-
-      - name: Run TypeScript unit tests
-        id: test_unittests
-        run: npm run test:unittests
-
-      - name: Verify there are no unhandled errors
-        run: npm run verifyUnhandledErrors
-
   vscodeTests:
     name: Tests # These tests run with Python extension & real Jupyter
     runs-on: ${{ matrix.os }}
@@ -262,7 +68,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        jupyterConnection: [raw] # valid values include raw = uzing zqm, local = using local jupyter, remote = using remote jupyter, web = using remote jupyter in web mode
+        jupyterConnection: [web] # valid values include raw = uzing zqm, local = using local jupyter, remote = using remote jupyter, web = using remote jupyter in web mode
         python: [python] # valid values include python,conda,noPython
         pythonVersion: ['3.10']
         # Whether we're using stable (<empty>) or pre-release versions of Python packages.
@@ -270,13 +76,7 @@ jobs:
         # Not pre-release versions of pandas, numpy or other such packages that are not core to Jupyter.
         packageVersion: ['']
         tags: [
-            '^[^@]+$|@mandatory|@kernelCore|@python|@jupyter',
-            '@widgets',
-            '@iw',
-            '@webview|@export|@lsp|@variableViewer',
-            '@debugger',
-            '@notebookPerformance', # Disabled for now, separate PR this will be enabled via cron (want to make PR smaller)
-            '@executionPerformance'
+            '^[^@]+$|@mandatory'
           ]
         # We're not running CI on macOS for now because it's one less matrix entry to lower the number of runners used,
         # macOS runners are expensive, and we assume that Ubuntu is enough to cover the UNIX case.
@@ -292,78 +92,12 @@ jobs:
             isScheduled: ''
           - tags: '@executionPerformance' # Run only as part of scheduled CI runs
             isScheduled: ''
-        include:
-          # Mandatory tests
-          - jupyterConnection: remote
-            python: python
-            pythonVersion: '3.10'
-            tags: '^[^@]+$|@mandatory'
-            os: ubuntu-latest
-            ipywidgetsVersion: ''
-          #   - jupyterConnection: remote
-          #     python: python
-          #     pythonVersion: '3.10'
-          #     packageVersion: 'prerelease'
-          #     tags: '^[^@]+$|@mandatory'
-          #     os: ubuntu-latest
-          #     ipywidgetsVersion: ''
-          - jupyterConnection: web
-            python: python
-            pythonVersion: '3.10'
-            tags: '^[^@]+$|@mandatory'
-            os: ubuntu-latest
-            ipywidgetsVersion: ''
-          - jupyterConnection: raw
-            python: python
-            pythonVersion: '3.10'
-            tags: '^[^@]+$|@mandatory'
-            os: windows-latest
-            ipywidgetsVersion: ''
-          # IPyWidgets 8
-          - jupyterConnection: raw
-            python: python
-            pythonVersion: '3.10'
-            tags: '@widgets'
-            os: ubuntu-latest
-            ipywidgetsVersion: '8'
-          - jupyterConnection: remote
-            python: python
-            pythonVersion: '3.10'
-            tags: '@widgets'
-            os: ubuntu-latest
-            ipywidgetsVersion: '8'
-          # Conda
-          - jupyterConnection: raw
-            python: conda
-            pythonVersion: '3.10'
-            tags: '^[^@]+$|@mandatory|@python'
-            os: ubuntu-latest
-            ipywidgetsVersion: ''
-          # Pre-Release Versions
-          #   - jupyterConnection: raw
-          #     python: python
-          #     pythonVersion: '3.10'
-          #     packageVersion: 'prerelease'
-          #     tags: '^[^@]+$|@mandatory|@kernelCore|@python|@jupyter'
-          #     os: ubuntu-latest
-          #     ipywidgetsVersion: ''
-          # Without Python
-          - jupyterConnection: raw
-            python: noPython
-            tags: '@nonPython'
-            os: ubuntu-latest
-            ipywidgetsVersion: ''
-          # Misc
-          - jupyterConnection: remote
-            python: python
-            pythonVersion: '3.10'
-            tags: '@kernelCore'
-            os: ubuntu-latest
-            ipywidgetsVersion: ''
 
     steps:
       - name: Checkout
         uses: actions/checkout@v4
+        with:
+          persist-credentials: false
 
       - name: Generate Tag Variable
         run: echo "TAGSVAR=${{ matrix.tags }}}" >> $GITHUB_ENV
@@ -381,7 +115,7 @@ jobs:
           python-version: ${{matrix.pythonVersion}}
 
       - name: Install Conda environment from environment.yml
-        uses: mamba-org/setup-micromamba@v2
+        uses: mamba-org/setup-micromamba@b09ef9b599704322748535812ca03efb2625677b # v2.0.5
         if: matrix.python == 'conda'
         with:
           cache-downloads: true
@@ -572,9 +306,9 @@ jobs:
         if: matrix.jupyterConnection != 'web'
         run: npm run postinstall
 
-      - name: Install screen capture dependencies
-        if: matrix.os == 'ubuntu-latest'
-        run: sudo apt-get install --fix-missing imagemagick x11-xserver-utils
+    #   - name: Install screen capture dependencies
+    #     if: matrix.os == 'ubuntu-latest'
+    #     run: sudo apt-get update && sudo apt-get install --fix-missing imagemagick x11-xserver-utils
 
         # This step is slow.
       - name: Compile # if not cached
@@ -595,7 +329,7 @@ jobs:
       # Used by tests for non-python kernels.
       # Test are enabled via env variable `VSC_JUPYTER_CI_RUN_NON_PYTHON_NB_TEST`
       - name: Install Deno
-        uses: denoland/setup-deno@v2
+        uses: denoland/setup-deno@909cc5acb0fdd60627fb858598759246509fa755 # v2.0.2
         if: matrix.tags != '@notebookPerformance'
         with:
           deno-version: ${{ env.DENO_VERSION}}
@@ -641,7 +375,7 @@ jobs:
         run: echo "xvfbCommand=--server-args=\"-screen 0 1024x768x24\"" >> $GITHUB_ENV
 
       - name: Run Native Notebook with VSCode & Jupyter (ubuntu)
-        uses: GabrielBB/xvfb-action@v1.7
+        uses: GabrielBB/xvfb-action@b706e4e27b14669b486812790492dc50ca16b465 # v1.7
         with:
           run: ${{ env.xvfbCommand }} npm run testNativeNotebooksInVSCode
         env:
@@ -658,7 +392,7 @@ jobs:
         if: matrix.python != 'noPython' && matrix.os == 'ubuntu-latest' && matrix.jupyterConnection != 'web' && matrix.tags != '@notebookPerformance'
 
       - name: Run Notebook Perf Test Without Jupyter
-        uses: GabrielBB/xvfb-action@v1.7
+        uses: GabrielBB/xvfb-action@b706e4e27b14669b486812790492dc50ca16b465 # v1.7
         with:
           run: ${{ env.xvfbCommand }} npm run testPerfInVSCode
         env:
@@ -678,7 +412,7 @@ jobs:
         if: matrix.tags == '@notebookPerformance'
 
       - name: Run Execution Perf Test With Jupyter
-        uses: GabrielBB/xvfb-action@v1.7
+        uses: GabrielBB/xvfb-action@b706e4e27b14669b486812790492dc50ca16b465 # v1.7
         with:
           run: ${{ env.xvfbCommand }} npm run testExecPerfInVSCode
         env:
@@ -702,7 +436,7 @@ jobs:
           VSC_JUPYTER_CI_TEST_GREP: ${{ matrix.tags }}
 
       - name: Run Native Notebook with VSCode & Jupyter (web)
-        uses: GabrielBB/xvfb-action@v1.7
+        uses: GabrielBB/xvfb-action@b706e4e27b14669b486812790492dc50ca16b465 # v1.7
         with:
           run: npm run testWebExtension
         env:
@@ -736,7 +470,7 @@ jobs:
         if: matrix.python != 'noPython' && matrix.os == 'windows-latest' && matrix.jupyterConnection != 'web'
 
       - name: Run Native Notebook with VSCode & Jupyter (without Python)
-        uses: GabrielBB/xvfb-action@v1.7
+        uses: GabrielBB/xvfb-action@b706e4e27b14669b486812790492dc50ca16b465 # v1.7
         with:
           run: ${{ env.xvfbCommand }} npm run testNativeNotebooksWithoutPythonInVSCode
         env:
@@ -769,74 +503,3 @@ jobs:
 
       - name: Verify there are no unhandled errors
         run: npm run verifyUnhandledErrors
-
-  smoke-tests:
-    timeout-minutes: 30
-    name: Smoke tests
-    # The value of runs-on is the OS of the current job (specified in the strategy matrix below) instead of being hardcoded.
-    runs-on: ${{ matrix.os }}
-    if: github.repository == 'microsoft/vscode-jupyter'
-    needs: [build-vsix]
-    env:
-      VSIX_NAME: 'ms-toolsai-jupyter-insiders.vsix'
-    strategy:
-      fail-fast: false
-      matrix:
-        os: [ubuntu-latest, windows-latest, macos-latest]
-        python: ['3.10']
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v4
-
-      - name: Use Python ${{matrix.python}}
-        uses: actions/setup-python@v5
-        id: setupPythonVersion
-        with:
-          python-version: ${{matrix.python}}
-
-      - name: Set CI Path
-        shell: bash
-        run: echo "CI_PYTHON_PATH=${{ steps.setupPythonVersion.outputs.python-path }}" >> $GITHUB_ENV
-
-      - name: Use Node ${{env.NODE_VERSION}}
-        uses: actions/setup-node@v4
-        with:
-          node-version: ${{env.NODE_VERSION}}
-
-      - name: Use Npm ${{env.NPM_VERSION}}
-        run: npm i -g npm@${{env.NPM_VERSION}}
-
-      - name: Download VSIX
-        uses: actions/download-artifact@v4
-        with:
-          name: 'ms-toolsai-jupyter-insiders.vsix'
-
-      # This is faster than running `npm ci`, we do not want to build zmq, etc.
-      # Let that happen in other jobs, this job needs to be fast
-      - name: npm ci
-        run: npm ci --ignore-scripts --prefer-offline --no-audit
-
-      # Run again, as the download of zmq binaries could have failed with 403 errors
-      - run: npm run postinstall
-        env:
-          GITHUB_TOKEN: ${{ github.token }}
-        shell: bash
-
-      - name: pip install system test requirements
-        run: |
-          python -m pip install --upgrade -r build/venv-smoke-test-requirements.txt
-        shell: bash
-
-      # Compile the test files.
-      - name: Prepare for smoke tests
-        run: npx tsc -p ./
-        shell: bash
-
-      - name: Run desktop smoke tests
-        env:
-          DISPLAY: 10
-          VSC_JUPYTER_FORCE_LOGGING: 1
-          VSC_JUPYTER_CI_TEST_VSC_CHANNEL: 'insiders'
-        uses: GabrielBB/xvfb-action@v1.7
-        with:
-          run: npm run testSmokeLogged
diff --git a/build/launchWebUtils.js b/build/launchWebUtils.js
index 7198117b971..01f668dcc98 100644
--- a/build/launchWebUtils.js
+++ b/build/launchWebUtils.js
@@ -66,7 +66,11 @@ exports.launch = async function launch(launchTests) {
             port,
             headless: isCI ? false : false, // Set this to false to debug failures (false on CI to support capturing screenshots when tests fail).
             extensionDevelopmentPath,
-            folderPath: path.resolve(__dirname, '..', 'src', 'test', 'datascience')
+            folderPath: path.resolve(__dirname, '..', 'src', 'test', 'datascience'),
+            quality: 'insiders',
+            // commit: '16ee4a72cebe007cc3f25d139bb379c3a1a27ea9'
+            // commit: '83d1ff749141e435b3b135079a02f8f515621eec'
+            commit: 'dac0c97d082bd3bf38fdb3251e955e25c7c992a0'
         };
         if (launchTests) {
             options.extensionTestsPath = bundlePath;
diff --git a/package-lock.json b/package-lock.json
index d56b08babe6..0290a4887ee 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -229,7 +229,7 @@
                 "webpack-cli": "^5.1.4"
             },
             "engines": {
-                "vscode": "^1.100.0"
+                "vscode": "^1.99.0"
             },
             "optionalDependencies": {
                 "fsevents": "^2.3.2"
diff --git a/package.json b/package.json
index b1f1f3249f6..7205ce76485 100644
--- a/package.json
+++ b/package.json
@@ -29,7 +29,7 @@
         "theme": "light"
     },
     "engines": {
-        "vscode": "^1.100.0"
+        "vscode": "^1.98.0"
     },
     "l10n": "./l10n",
     "extensionKind": [
diff --git a/src/test/standardTest.node.ts b/src/test/standardTest.node.ts
index a122b760970..dfec89a509a 100644
--- a/src/test/standardTest.node.ts
+++ b/src/test/standardTest.node.ts
@@ -52,9 +52,10 @@ function isNotebookPerfTestWithoutJupyter() {
     return !!process.env.VSC_JUPYTER_NOTEBOOK_PERF_TEST;
 }
 
-const channel = (process.env.VSC_JUPYTER_CI_TEST_VSC_CHANNEL || '').toLowerCase().includes('insiders')
-    ? 'insiders'
-    : 'stable';
+// const channel = '83d1ff749141e435b3b135079a02f8f515621eec';
+// const channel = '2ba158ca779b715bd4d29d1cb6ac022b27672b26';
+const channel = '1.99.0';
+// const channel = '17baf841131aa23349f217ca7c570c76ee87b957';
 
 function computePlatform() {
     switch (process.platform) {