diff --git a/CHANGELOG.md b/CHANGELOG.md
index 9aa6b63..ae00e06 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -28,6 +28,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Update `GetToolInstallationPath` to use user temp folder.
 - Update `TestRunUtil` icons to circle with color.
 - Update `AzureSignToolUtils` sign to ignore exception.
+- Update `AzureSignToolUtils` to ignore if file is already signed.
 ### Example
 - Add `Resource` and `Resource.pt-BR` to test sign files.
 ### Tests
diff --git a/Directory.Build.props b/Directory.Build.props
index 762838f..9012c01 100644
--- a/Directory.Build.props
+++ b/Directory.Build.props
@@ -1,5 +1,5 @@
 <Project>
 	<PropertyGroup>
-		<Version>1.9.0-beta.2</Version>
+		<Version>1.9.0-beta.3</Version>
 	</PropertyGroup>
 </Project>
\ No newline at end of file
diff --git a/ricaun.Nuke/Extensions/NuGetExtension.cs b/ricaun.Nuke/Extensions/NuGetExtension.cs
index dd3945e..3d40d82 100644
--- a/ricaun.Nuke/Extensions/NuGetExtension.cs
+++ b/ricaun.Nuke/Extensions/NuGetExtension.cs
@@ -46,6 +46,21 @@ public static NugetVersionInfo Parse(string packageFileName)
     /// </summary>
     public static class NuGetExtension
     {
+        /// <summary>
+        /// NuGetFileExtension (.nupkg)
+        /// </summary>
+        public const string NuGetFileExtension = ".nupkg";
+
+        /// <summary>
+        /// Check if file has NuGet extension (.nupkg)
+        /// </summary>
+        /// <param name="filePath"></param>
+        /// <returns></returns>
+        public static bool IsNuGetFile(string filePath)
+        {
+            return Path.GetExtension(filePath).Equals(NuGetFileExtension, StringComparison.InvariantCultureIgnoreCase);
+        }
+
         /// <summary>
         /// TryGetPackageNameAndVersion
         /// </summary>
diff --git a/ricaun.Nuke/Extensions/SignExtension.cs b/ricaun.Nuke/Extensions/SignExtension.cs
index c3701bd..7d605f1 100644
--- a/ricaun.Nuke/Extensions/SignExtension.cs
+++ b/ricaun.Nuke/Extensions/SignExtension.cs
@@ -81,7 +81,7 @@ public static bool CreateCerFile(string fileNamePfx, string passwordPfx, string
         /// <remarks>NuGet files use <see cref="NuGetExtension.NugetSign"/>.</remarks>
         public static void Sign(string certPath, string certPassword, string filePath)
         {
-            if (Path.GetExtension(filePath) == ".nupkg")
+            if (NuGetExtension.IsNuGetFile(filePath))
             {
                 SignNuGet(certPath, certPassword, filePath);
                 return;
@@ -167,20 +167,20 @@ public static void SignNuGet(string certPath, string certPassword, string binary
         }
 
         /// <summary>
-        /// Has Signature
+        /// Has Signature in the file or NuGet
         /// </summary>
-        /// <param name="fileInfo"></param>
+        /// <param name="filePath"></param>
         /// <returns></returns>
-        static bool HasSignature(string fileInfo)
+        public static bool HasSignature(string filePath)
         {
-            if (fileInfo.EndsWith(".nupkg"))
+            if (NuGetExtension.IsNuGetFile(filePath))
             {
-                return NuGetExtension.NuGetVerifySignatures(fileInfo);
+                return NuGetExtension.NuGetVerifySignatures(filePath);
             }
 
             try
             {
-                System.Security.Cryptography.X509Certificates.X509Certificate.CreateFromSignedFile(fileInfo);
+                System.Security.Cryptography.X509Certificates.X509Certificate.CreateFromSignedFile(filePath);
                 return true;
             }
             catch
diff --git a/ricaun.Nuke/Tools/AzureSignToolUtils.cs b/ricaun.Nuke/Tools/AzureSignToolUtils.cs
index f7a059f..eeb8eb8 100644
--- a/ricaun.Nuke/Tools/AzureSignToolUtils.cs
+++ b/ricaun.Nuke/Tools/AzureSignToolUtils.cs
@@ -9,6 +9,7 @@
 using Nuke.Common.Tools.DotNet;
 using Nuke.Common.IO;
 using Nuke.Common.Tooling;
+using ricaun.Nuke.Extensions;
 
 namespace ricaun.Nuke.Tools
 {
@@ -19,7 +20,6 @@ public class AzureSignToolUtils
     {
         private const string TimestampUrlDefault = "http://timestamp.digicert.com";
         private const string TimestampDigestDefault = "sha256";
-        private const string NugetPackageExtension = ".nupkg";
 
         /// <summary>
         /// Ensures that Azure Sign Tool and NuGet Key Vault Sign Tool are installed.
@@ -112,23 +112,26 @@ public static void DownloadNuGetKeyVaultSignTool()
         /// <summary>
         /// Signs the specified file using Azure Sign Tool or NuGet Key Vault Sign Tool.
         /// </summary>
-        /// <param name="fileName">The name of the file to sign.</param>
+        /// <param name="filePath">The name of the file to sign.</param>
         /// <param name="azureKeyVaultConfig">The Azure Key Vault configuration.</param>
         /// <param name="azureKeyVaultClientSecret">The Azure Key Vault client secret.</param>
         /// <param name="timestampUrlDefault">The default timestamp URL.</param>
         /// <param name="timestampDigestDefault">The default timestamp digest.</param>
-        public static void Sign(string fileName,
+        public static void Sign(string filePath,
             AzureKeyVaultConfig azureKeyVaultConfig, string azureKeyVaultClientSecret,
             string timestampUrlDefault = TimestampUrlDefault,
             string timestampDigestDefault = TimestampDigestDefault)
         {
             try
             {
-                if (Path.GetExtension(fileName) == NugetPackageExtension)
+                if (SignExtension.HasSignature(filePath))
+                    return;
+
+                if (NuGetExtension.IsNuGetFile(filePath))
                 {
                     DownloadNuGetKeyVaultSignTool();
                     NuGetKeyVaultSignToolTasks.NuGetKeyVaultSignTool(x => x
-                        .SetFile(fileName)
+                        .SetFile(filePath)
                         .SetKeyVaultCertificateName(azureKeyVaultConfig.AzureKeyVaultCertificate)
                         .SetKeyVaultUrl(azureKeyVaultConfig.AzureKeyVaultUrl)
                         .SetKeyVaultClientId(azureKeyVaultConfig.AzureKeyVaultClientId)
@@ -142,7 +145,7 @@ public static void Sign(string fileName,
 
                 DownloadAzureSignTool();
                 AzureSignToolTasks.AzureSignTool(x => x
-                    .SetFiles(fileName)
+                    .SetFiles(filePath)
                     .SetKeyVaultCertificateName(azureKeyVaultConfig.AzureKeyVaultCertificate)
                     .SetKeyVaultUrl(azureKeyVaultConfig.AzureKeyVaultUrl)
                     .SetKeyVaultClientId(azureKeyVaultConfig.AzureKeyVaultClientId)
@@ -154,7 +157,7 @@ public static void Sign(string fileName,
             }
             catch (Exception ex)
             {
-                Serilog.Log.Error($"Azure Sign Error: {Path.GetFileName(fileName)} - {ex.Message}");
+                Serilog.Log.Error($"Azure Sign Error: {Path.GetFileName(filePath)} - {ex.Message}");
                 Serilog.Log.Information(ex.ToString());
             }
         }