diff --git a/.github/workflows/e2e-tests.yml b/.github/workflows/e2e-tests.yml
index 6d00d5d..3933a34 100644
--- a/.github/workflows/e2e-tests.yml
+++ b/.github/workflows/e2e-tests.yml
@@ -133,6 +133,27 @@ jobs:
         shell: pwsh
         run: __tests__/verify-dotnet.ps1 -Patterns "^2.2", "^3.1"
 
+  test-ABCxx-syntax:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+
+      - name: Setup dotnet 6.0.4xx
+        uses: ./
+        with:
+          dotnet-version: '6.0.4xx'
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 -Patterns "^6\.0\.4\d{2}"
+
   test-setup-with-wildcard:
     runs-on: ${{ matrix.operating-system }}
     strategy:
@@ -183,6 +204,31 @@ jobs:
         shell: pwsh
         run: __tests__/verify-dotnet.ps1 -Patterns "^2.2", "^3.1"
 
+  test-setup-global-json-only:
+    runs-on: ${{ matrix.operating-system }}
+    strategy:
+      fail-fast: false
+      matrix:
+        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+      - name: Clear toolcache
+        shell: pwsh
+        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
+      - name: Write global.json
+        shell: bash
+        run: |
+          mkdir subdirectory
+          echo '{"sdk":{"version": "2.2.207","rollForward": "latestFeature"}}' > ./subdirectory/global.json
+      - name: Setup dotnet
+        uses: ./
+        with:
+          global-json-file: ./subdirectory/global.json
+      - name: Verify dotnet
+        shell: pwsh
+        run: __tests__/verify-dotnet.ps1 -Patterns "^2.2"
+
   test-setup-with-dotnet-quality:
     runs-on: ${{ matrix.operating-system }}
     strategy:
@@ -205,27 +251,6 @@ jobs:
         shell: pwsh
         run: __tests__/verify-dotnet.ps1 -Patterns "^7\.0\.\d+-"
 
-  test-ABCxx-syntax:
-    runs-on: ${{ matrix.operating-system }}
-    strategy:
-      fail-fast: false
-      matrix:
-        operating-system: [ubuntu-latest, windows-latest, macOS-latest]
-    steps:
-      - name: Checkout
-        uses: actions/checkout@v3
-      - name: Clear toolcache
-        shell: pwsh
-        run: __tests__/clear-toolcache.ps1 ${{ runner.os }}
-
-      - name: Setup dotnet 6.0.4xx
-        uses: ./
-        with:
-          dotnet-version: '6.0.4xx'
-      - name: Verify dotnet
-        shell: pwsh
-        run: __tests__/verify-dotnet.ps1 -Patterns "^6\.0\.4\d{2}"
-
   test-dotnet-version-output-during-single-version-installation:
     runs-on: ${{ matrix.operating-system }}
     strategy:
diff --git a/__tests__/installer.test.ts b/__tests__/installer.test.ts
index 0d264b5..08aa8e7 100644
--- a/__tests__/installer.test.ts
+++ b/__tests__/installer.test.ts
@@ -306,7 +306,8 @@ describe('installer tests', () => {
         '3.1.*',
         '3.1.X',
         '3.1.2',
-        '3.1.0-preview1'
+        '3.1.0-preview1',
+        '6.0.2xx'
       ]).test(
         'if valid version is supplied (%s), it should return version object with some value',
         async version => {
@@ -358,7 +359,16 @@ describe('installer tests', () => {
         }
       );
 
-      each(['3', '3.1', '3.1.x', '3.1.*', '3.1.X']).test(
+      each([
+        '3',
+        '3.1',
+        '3.1.x',
+        '3.1.*',
+        '3.1.X',
+        '6.0.2xx',
+        '6.0.2XX',
+        '6.0.2**'
+      ]).test(
         "if version that can be resolved to 'channel' option is supplied (%s), it should set type to 'channel' in version object",
         async version => {
           const dotnetVersionResolver = new installer.DotnetVersionResolver(
@@ -373,7 +383,15 @@ describe('installer tests', () => {
         }
       );
 
-      each(['6.0', '6.0.x', '6.0.*', '6.0.X']).test(
+      each([
+        '6.0',
+        '6.0.x',
+        '6.0.*',
+        '6.0.X',
+        '6.0.2xx',
+        '6.0.2XX',
+        '6.0.2**'
+      ]).test(
         "if version that can be resolved to 'channel' option is supplied and its major tag is >= 6 (%s), it should set type to 'channel' and qualityFlag to 'true' in version object",
         async version => {
           const dotnetVersionResolver = new installer.DotnetVersionResolver(
@@ -425,6 +443,18 @@ describe('installer tests', () => {
           }
         }
       );
+
+      it(`should throw if dotnet-version is supplied in A.B.Cxx syntax with major tag lower that 5`, async () => {
+        const version = '3.0.1xx';
+        const dotnetVersionResolver = new installer.DotnetVersionResolver(
+          version
+        );
+        await expect(
+          async () => await dotnetVersionResolver.createDotNetVersion()
+        ).rejects.toThrow(
+          `'dotnet-version' was supplied in invalid format: ${version}! The A.B.Cxx syntax is available since the .NET 5.0 release.`
+        );
+      });
     });
   });
 });
diff --git a/__tests__/setup-dotnet.test.ts b/__tests__/setup-dotnet.test.ts
index 831408c..45043a1 100644
--- a/__tests__/setup-dotnet.test.ts
+++ b/__tests__/setup-dotnet.test.ts
@@ -12,6 +12,7 @@ describe('setup-dotnet tests', () => {
   const getInputSpy = jest.spyOn(core, 'getInput');
   const getMultilineInputSpy = jest.spyOn(core, 'getMultilineInput');
   const setFailedSpy = jest.spyOn(core, 'setFailed');
+  const warningSpy = jest.spyOn(core, 'warning');
   const debugSpy = jest.spyOn(core, 'debug');
   const infoSpy = jest.spyOn(core, 'info');
   const setOutputSpy = jest.spyOn(core, 'setOutput');
@@ -133,14 +134,40 @@ describe('setup-dotnet tests', () => {
       );
     });
 
-    it('should call setOutput() after installation complete', async () => {
+    it('should call setOutput() after installation complete successfully', async () => {
       inputs['dotnet-version'] = ['6.0.300'];
 
-      installDotnetSpy.mockImplementation(() => Promise.resolve(''));
+      installDotnetSpy.mockImplementation(() =>
+        Promise.resolve(`${inputs['dotnet-version']}`)
+      );
       addToPathSpy.mockImplementation(() => {});
 
       await setup.run();
       expect(setOutputSpy).toHaveBeenCalledTimes(1);
     });
+
+    it(`shouldn't call setOutput() if parsing dotnet-installer logs failed`, async () => {
+      inputs['dotnet-version'] = ['6.0.300'];
+      const warningMessage = `Failed to output the installed version of .NET. The 'dotnet-version' output will not be set.`;
+
+      installDotnetSpy.mockImplementation(() => Promise.resolve(null));
+      addToPathSpy.mockImplementation(() => {});
+
+      await setup.run();
+      expect(warningSpy).toHaveBeenCalledWith(warningMessage);
+      expect(setOutputSpy).not.toHaveBeenCalled();
+    });
+
+    it(`shouldn't call setOutput() if actions didn't install .NET`, async () => {
+      inputs['dotnet-version'] = [];
+      const warningMessage = `No .NET version was installed. The 'dotnet-version' output will not be set.`;
+
+      addToPathSpy.mockImplementation(() => {});
+
+      await setup.run();
+
+      expect(infoSpy).toHaveBeenCalledWith(warningMessage);
+      expect(setOutputSpy).not.toHaveBeenCalled();
+    });
   });
 });
diff --git a/dist/index.js b/dist/index.js
index 2b8903f..aca3dd0 100644
--- a/dist/index.js
+++ b/dist/index.js
@@ -270,7 +270,7 @@ class DotnetVersionResolver {
     }
     isLatestPatchSyntax() {
         var _b, _c;
-        const majorTag = (_c = (_b = this.inputVersion.match(/^(?<majorTag>\d+)\.\d+\.\d{1}x{2}$/)) === null || _b === void 0 ? void 0 : _b.groups) === null || _c === void 0 ? void 0 : _c.majorTag;
+        const majorTag = (_c = (_b = this.inputVersion.match(/^(?<majorTag>\d+)\.\d+\.\d{1}(x|X|\*){2}$/)) === null || _b === void 0 ? void 0 : _b.groups) === null || _c === void 0 ? void 0 : _c.majorTag;
         if (majorTag &&
             parseInt(majorTag) <
                 DotnetInstallerLimits.LatestPatchSyntaxMinimalMajorTag) {
@@ -606,6 +606,7 @@ function getVersionFromGlobalJson(globalJsonPath) {
 function outputInstalledVersion(installedVersions, globalJsonFileInput) {
     if (!installedVersions.length) {
         core.info(`No .NET version was installed. The 'dotnet-version' output will not be set.`);
+        return;
     }
     if (installedVersions.includes(null)) {
         core.warning(`Failed to output the installed version of .NET. The 'dotnet-version' output will not be set.`);
diff --git a/src/installer.ts b/src/installer.ts
index d31ec00..e4c3ffe 100644
--- a/src/installer.ts
+++ b/src/installer.ts
@@ -49,7 +49,7 @@ export class DotnetVersionResolver {
 
   private isLatestPatchSyntax() {
     const majorTag = this.inputVersion.match(
-      /^(?<majorTag>\d+)\.\d+\.\d{1}x{2}$/
+      /^(?<majorTag>\d+)\.\d+\.\d{1}(x|X|\*){2}$/
     )?.groups?.majorTag;
     if (
       majorTag &&
diff --git a/src/setup-dotnet.ts b/src/setup-dotnet.ts
index 188257b..e7e7726 100644
--- a/src/setup-dotnet.ts
+++ b/src/setup-dotnet.ts
@@ -112,7 +112,9 @@ function outputInstalledVersion(
     core.info(
       `No .NET version was installed. The 'dotnet-version' output will not be set.`
     );
+    return;
   }
+
   if (installedVersions.includes(null)) {
     core.warning(
       `Failed to output the installed version of .NET. The 'dotnet-version' output will not be set.`