diff --git a/src/Microsoft.DotNet.SignTool.Tests/FakeSignTool.cs b/src/Microsoft.DotNet.SignTool.Tests/FakeSignTool.cs
index 74fc9d120ad..bbe40913f7e 100644
--- a/src/Microsoft.DotNet.SignTool.Tests/FakeSignTool.cs
+++ b/src/Microsoft.DotNet.SignTool.Tests/FakeSignTool.cs
@@ -34,7 +34,7 @@ public override SigningStatus VerifySignedPEFile(Stream stream)
 
         public override SigningStatus VerifyStrongNameSign(string fileFullPath) => SigningStatus.Signed;
 
-        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath)
+        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath, bool suppressErrors = false)
             => buildEngine.BuildProjectFile(projectFilePath, null, null, null);
 
         internal static void SignFile(string path)
diff --git a/src/Microsoft.DotNet.SignTool/src/RealSignTool.cs b/src/Microsoft.DotNet.SignTool/src/RealSignTool.cs
index 04c9a7c97c4..27ca130fce3 100644
--- a/src/Microsoft.DotNet.SignTool/src/RealSignTool.cs
+++ b/src/Microsoft.DotNet.SignTool/src/RealSignTool.cs
@@ -46,7 +46,7 @@ internal RealSignTool(SignToolArgs args, TaskLoggingHelper log) : base(args, log
             _dotnetTimeout = args.DotNetTimeout;
         }
 
-        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath)
+        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath, bool suppressErrors = false)
         {
             if (_dotnetPath == null)
             {
@@ -80,7 +80,10 @@ public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath
                 bool success = true;
                 if (!process.WaitForExit(_dotnetTimeout))
                 {
-                    _log.LogError($"MSBuild process did not exit within '{_dotnetTimeout}' ms.");
+                    if (suppressErrors)
+                        _log.LogMessage(MessageImportance.High, $"MSBuild process did not exit within '{_dotnetTimeout}' ms.");
+                    else
+                        _log.LogError($"MSBuild process did not exit within '{_dotnetTimeout}' ms.");
                     process.Kill();
                     process.WaitForExit();
                     success = false;
@@ -88,8 +91,12 @@ public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath
 
                 if (process.ExitCode != 0)
                 {
-                    _log.LogError($"Failed to execute MSBuild on the project file '{projectFilePath}'" +
-                    $" with exit code '{process.ExitCode}'.");
+                    if (suppressErrors)
+                        _log.LogMessage(MessageImportance.High, $"Failed to execute MSBuild on the project file '{projectFilePath}'" +
+                        $" with exit code '{process.ExitCode}'.");
+                    else
+                        _log.LogError($"Failed to execute MSBuild on the project file '{projectFilePath}'" +
+                        $" with exit code '{process.ExitCode}'.");
                     success = false;
                 }
 
diff --git a/src/Microsoft.DotNet.SignTool/src/SignTool.cs b/src/Microsoft.DotNet.SignTool/src/SignTool.cs
index e1eecfe9efa..b7fcc6c248c 100644
--- a/src/Microsoft.DotNet.SignTool/src/SignTool.cs
+++ b/src/Microsoft.DotNet.SignTool/src/SignTool.cs
@@ -49,7 +49,7 @@ internal SignTool(SignToolArgs args, TaskLoggingHelper log)
 
         public abstract SigningStatus VerifyStrongNameSign(string fileFullPath);
 
-        public abstract bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath);
+        public abstract bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath, bool suppressErrors = false);
 
         public bool Sign(IBuildEngine buildEngine, int round, IEnumerable<FileSignInfo> files)
         {
@@ -191,7 +191,7 @@ private bool AuthenticodeSignAndNotarize(IBuildEngine buildEngine, int round, IE
             {
                 var notarizeProjectPath = Path.Combine(dir, $"Round{round}-Notarize.proj");
                 File.WriteAllText(notarizeProjectPath, GenerateBuildFileContent(filesToNotarize, null, true));
-                
+
                 // Notarization can be flaky, so retry up to 5 times with no wait between retries
                 const int maxRetries = 5;
                 int attempt = 0;
@@ -208,7 +208,8 @@ private bool AuthenticodeSignAndNotarize(IBuildEngine buildEngine, int round, IE
                     notarizationSucceeded = RunMSBuild(buildEngine, notarizeProjectPath, 
                         Path.Combine(_args.LogDir, $"{notarizeLogName}.binlog"), 
                         Path.Combine(_args.LogDir, $"{notarizeLogName}.log"), 
-                        Path.Combine(_args.LogDir, $"{notarizeLogName}.error.log"));
+                        Path.Combine(_args.LogDir, $"{notarizeLogName}.error.log"),
+                        suppressErrors: attempt < maxRetries);
                     
                     if (!notarizationSucceeded && attempt < maxRetries)
                     {
diff --git a/src/Microsoft.DotNet.SignTool/src/ValidationOnlySignTool.cs b/src/Microsoft.DotNet.SignTool/src/ValidationOnlySignTool.cs
index 98bdd73b160..aae9ac59d9b 100644
--- a/src/Microsoft.DotNet.SignTool/src/ValidationOnlySignTool.cs
+++ b/src/Microsoft.DotNet.SignTool/src/ValidationOnlySignTool.cs
@@ -55,7 +55,7 @@ public override SigningStatus VerifySignedPEFile(Stream assemblyStream)
         public override SigningStatus VerifyStrongNameSign(string fileFullPath)
             => SigningStatus.Signed;
 
-        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath)
+        public override bool RunMSBuild(IBuildEngine buildEngine, string projectFilePath, string binLogPath, string logPath, string errorLogPath, bool suppressErrors = false)
         {
             if (TestSign)
             {