diff --git a/src/shared/Microsoft.Git.CredentialManager/Interop/Posix/PosixEnvironment.cs b/src/shared/Microsoft.Git.CredentialManager/Interop/Posix/PosixEnvironment.cs
index 3251590c34..7082a098dd 100644
--- a/src/shared/Microsoft.Git.CredentialManager/Interop/Posix/PosixEnvironment.cs
+++ b/src/shared/Microsoft.Git.CredentialManager/Interop/Posix/PosixEnvironment.cs
@@ -36,6 +36,7 @@ public override string LocateExecutable(string program)
             const string whichPath = "/usr/bin/which";
             var psi = new ProcessStartInfo(whichPath, program)
             {
+                UseShellExecute = false,
                 RedirectStandardOutput = true
             };
 
diff --git a/src/shared/Microsoft.Git.CredentialManager/Interop/Windows/WindowsEnvironment.cs b/src/shared/Microsoft.Git.CredentialManager/Interop/Windows/WindowsEnvironment.cs
index 23b1cd7b41..919a48192d 100644
--- a/src/shared/Microsoft.Git.CredentialManager/Interop/Windows/WindowsEnvironment.cs
+++ b/src/shared/Microsoft.Git.CredentialManager/Interop/Windows/WindowsEnvironment.cs
@@ -70,6 +70,7 @@ public override string LocateExecutable(string program)
             string wherePath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.System), "where.exe");
             var psi = new ProcessStartInfo(wherePath, program)
             {
+                UseShellExecute = false,
                 RedirectStandardOutput = true
             };