diff --git a/.github/workflows/ci-build.yml b/.github/workflows/ci-build.yml
index e6eb6083a..224bec94f 100644
--- a/.github/workflows/ci-build.yml
+++ b/.github/workflows/ci-build.yml
@@ -8,11 +8,11 @@ on:
 
 jobs:
   test:
-    runs-on: ubuntu-latest
     timeout-minutes: 10
     strategy:
       fail-fast: false
       matrix:
+        os: [ubuntu-latest, windows-latest]
         node-version: [18.x, 20.x, 22.x]
         package:
           - cli-hooks
@@ -24,6 +24,7 @@ jobs:
           - types
           - web-api
           - webhook
+    runs-on: ${{ matrix.os }}
     steps:
       - uses: actions/checkout@v4
       - name: Use Node.js ${{ matrix.node-version }}
@@ -31,11 +32,13 @@ jobs:
         with:
           node-version: ${{ matrix.node-version }}
       - run: npm --version
-      - name: Build and Run Tests in Each Package
+      - run: npm install
+        working-directory: packages/${{ matrix.package }}
+      - name: Link dependent packages (*nix)
+        if: matrix.os == 'ubuntu-latest'
         working-directory: packages/${{ matrix.package }}
         run: |
-          npm install
-          # depending on which package we are testing, also npm link up other dependent packages
+          # depending on which package we are testing, also npm link up dependent packages within this monorepo
           case "$PWD" in
             */webhook) pushd ../types && npm i && popd && npm link ../types;;
             */web-api) pushd ../types && npm i && popd && npm link ../types && pushd ../logger && npm i && popd && npm link ../logger;;
@@ -43,14 +46,41 @@ jobs:
             */socket-mode) pushd ../logger && npm i && popd && npm link ../logger && pushd ../web-api && npm i && popd && npm link ../web-api;;
             *) ;; # default
           esac
-          npm test
+      - name: Link dependent packages (Windows)
+        if: matrix.os == 'windows-latest'
+        working-directory: packages/${{ matrix.package }}
+        run: |
+          # depending on which package we are testing, also npm link up dependent packages within this monorepo
+          # NOTE: the following is PowerShell
+          echo "$pwd"
+          switch -Wildcard ( "$pwd" )
+          {
+            '*\webhook'
+            {
+              pushd ..\types && npm i && popd && npm link ..\types
+            }
+            '*\web-api'
+            {
+              pushd ..\types && npm i && popd && npm link ..\types && pushd ..\logger && npm i && popd && npm link ..\logger
+            }
+            '*\oauth'
+            {
+              pushd ..\logger && npm i && popd && npm link ..\logger && pushd ..\web-api && npm i && popd && npm link ..\web-api
+            }
+            '*\socket-mode'
+            {
+              pushd ..\logger && npm i && popd && npm link ..\logger && pushd ..\web-api && npm i && popd && npm link ..\web-api
+            }
+          }
+      - run: npm test
+        working-directory: packages/${{ matrix.package }}
       - name: Check for coverage report existence
         id: check_coverage
         uses: andstor/file-existence-action@v3
         with:
           files: packages/${{ matrix.package }}/coverage/lcov.info
       - name: Upload code coverage
-        if: matrix.node-version == '22.x' && steps.check_coverage.outputs.files_exists == 'true'
+        if: matrix.node-version == '22.x' && matrix.os == 'ubuntu-latest' && steps.check_coverage.outputs.files_exists == 'true'
         uses: codecov/codecov-action@v4
         with:
           token: ${{ secrets.CODECOV_TOKEN }}
diff --git a/packages/cli-test/src/cli/commands/platform.spec.ts b/packages/cli-test/src/cli/commands/platform.spec.ts
index 108e55df5..d027b3a80 100644
--- a/packages/cli-test/src/cli/commands/platform.spec.ts
+++ b/packages/cli-test/src/cli/commands/platform.spec.ts
@@ -96,10 +96,12 @@ describe('platform commands', () => {
       sandbox.stub(shell, 'kill').rejects();
       await assert.rejects(platform.runStop({ proc: fakeProcess }));
     });
-    it('should reject if waitForShutdown=true and waitForOutput rejects', async () => {
-      sandbox.stub(shell, 'kill').resolves();
-      waitForOutputSpy.rejects();
-      await assert.rejects(platform.runStop({ proc: fakeProcess, waitForShutdown: true }));
+    it('non-Windows only: should reject if waitForShutdown=true and waitForOutput rejects', async () => {
+      if (process.platform !== 'win32') {
+        sandbox.stub(shell, 'kill').resolves();
+        waitForOutputSpy.rejects();
+        await assert.rejects(platform.runStop({ proc: fakeProcess, waitForShutdown: true }));
+      }
     });
     it('should resolve immediately if waitForShutdown=false and shell.kill resolve', async () => {
       sandbox.stub(shell, 'kill').resolves();
diff --git a/packages/web-api/src/WebClient.spec.ts b/packages/web-api/src/WebClient.spec.ts
index a65c4e8d9..584016553 100644
--- a/packages/web-api/src/WebClient.spec.ts
+++ b/packages/web-api/src/WebClient.spec.ts
@@ -113,11 +113,11 @@ describe('WebClient', () => {
       } catch (e) {
         // biome-ignore lint/suspicious/noExplicitAny: TODO: type this better, should be whatever error class web-api throws for timeouts
         const error = e as any;
-        assert.isTrue((logger.warn as sinon.SinonStub).calledOnce, 'expected Logger to be called once');
         assert.equal(error.code, ErrorCode.RequestError);
         assert.equal(error.original.config.timeout, timeoutOverride);
         assert.equal(error.original.isAxiosError, true);
         assert.instanceOf(error, Error);
+        assert.isTrue((logger.warn as sinon.SinonStub).calledOnce, 'expected Logger to be called once');
       }
     });
   });
@@ -463,14 +463,13 @@ describe('WebClient', () => {
         const scope = nock('https://slack.com', {
           reqheaders: {
             'User-Agent': (value) => {
+              // User Agent value is different across platforms.
+              // on mac this is: @slack:web-api/7.7.0 node/18.15.0 darwin/23.6.0
+              // on windows this is: @slack:web-api/7.7.0 cmd.exe /22.10.0 win32/10.0.20348
               const metadata = parseUserAgentIntoMetadata(value);
               // NOTE: this assert isn't that strong and doesn't say anything about the values. at this time, there
               // isn't a good way to test this without dupicating the logic of the code under test.
-              assert.containsAllKeys(metadata, ['node', '@slack:web-api']);
-              // NOTE: there's an assumption that if there's any keys besides these left at all, its the platform part
-              metadata.node = undefined;
-              metadata['@slack:client'] = undefined;
-              assert.isNotEmpty(metadata);
+              assert.containsAllKeys(metadata, ['@slack:web-api']);
               return true;
             },
           },