diff --git a/src/AppInstallerCLICore/Command.cpp b/src/AppInstallerCLICore/Command.cpp
index d0988c10aa..8d7eb8b719 100644
--- a/src/AppInstallerCLICore/Command.cpp
+++ b/src/AppInstallerCLICore/Command.cpp
@@ -675,6 +675,22 @@ namespace AppInstaller::CLI
             throw CommandException(Resource::String::HeaderArgumentNotApplicableWithoutSource, Argument::ForType(Execution::Args::Type::CustomHeader).Name());
         }
 
+        if (execArgs.Contains(Execution::Args::Type::Count))
+        {
+            try
+            {
+                int countRequested = std::stoi(std::string(execArgs.GetArg(Execution::Args::Type::Count)));
+                if (countRequested < 1 || countRequested > 1000)
+                {
+                    throw CommandException(Resource::String::CountOutOfBoundsError);
+                }
+            }
+            catch (...)
+            {
+                throw CommandException(Resource::String::CountOutOfBoundsError);
+            }
+        }
+
         ValidateArgumentsInternal(execArgs);
     }
 
diff --git a/src/AppInstallerCLICore/Resources.h b/src/AppInstallerCLICore/Resources.h
index a006b24259..84d3c907ca 100644
--- a/src/AppInstallerCLICore/Resources.h
+++ b/src/AppInstallerCLICore/Resources.h
@@ -43,6 +43,7 @@ namespace AppInstaller::CLI::Resource
         WINGET_DEFINE_RESOURCE_STRINGID(CompleteCommandLongDescription);
         WINGET_DEFINE_RESOURCE_STRINGID(CompleteCommandShortDescription);
         WINGET_DEFINE_RESOURCE_STRINGID(CountArgumentDescription);
+        WINGET_DEFINE_RESOURCE_STRINGID(CountOutOfBoundsError);
         WINGET_DEFINE_RESOURCE_STRINGID(DisabledByGroupPolicy);
         WINGET_DEFINE_RESOURCE_STRINGID(Done);
         WINGET_DEFINE_RESOURCE_STRINGID(ExactArgumentDescription);
diff --git a/src/AppInstallerCLIPackage/Shared/Strings/en-us/winget.resw b/src/AppInstallerCLIPackage/Shared/Strings/en-us/winget.resw
index df63107237..afdfabd198 100644
--- a/src/AppInstallerCLIPackage/Shared/Strings/en-us/winget.resw
+++ b/src/AppInstallerCLIPackage/Shared/Strings/en-us/winget.resw
@@ -167,7 +167,7 @@
     <value>Enables context sensitive command line completion</value>
   </data>
   <data name="CountArgumentDescription" xml:space="preserve">
-    <value>Show no more than specified number of results</value>
+    <value>Show no more than specified number of results (between 1 and 1000)</value>
   </data>
   <data name="Done" xml:space="preserve">
     <value>Done</value>
@@ -1190,4 +1190,7 @@ Please specify one of them using the `--source` option to proceed.</value>
   <data name="ImportIgnorePackageVersionsArgumentDescription" xml:space="preserve">
     <value>Ignore package versions in import file</value>
   </data>
-</root>
\ No newline at end of file
+  <data name="CountOutOfBoundsError" xml:space="preserve">
+    <value>The requested number of results must be between 1 and 1000.</value>
+  </data>
+</root>