diff --git a/Tools/find_vstool.ps1 b/Tools/find_vstool.ps1
index da2be6e1..f60c1fa6 100644
--- a/Tools/find_vstool.ps1
+++ b/Tools/find_vstool.ps1
@@ -19,9 +19,12 @@ function EditBinCertificateIsValid() {
         "3BDA323E552DB1FDE5F4FBEE75D6D5B2B187EEDC",
         "98ED99A67886D020C564923B7DF25E9AC019DF26",
         "108E2BA23632620C427C570B6D9DB51AC31387FE",
-        "5EAD300DC7E4D637948ECB0ED829A072BD152E17"
+        "5EAD300DC7E4D637948ECB0ED829A072BD152E17",
+        "97221B97098F37A135DCC212E2B41E452BCE51F2"
     )
     $file_signature = Get-AuthenticodeSignature -FilePath $Path
+    write-host "Path: $Path"
+    Write-Host "file_signature.SignerCertificate.Thumbprint: $($file_signature.SignerCertificate.Thumbprint)"
     if (($file_signature.Status -ne "Valid") -or ($valid_microsoft_cert_thumbprints -notcontains $file_signature.SignerCertificate.Thumbprint)) {
         Write-Warning "Could not validate the signature of $Path"
         return $false
@@ -36,8 +39,7 @@ function ToolCanBeExecuted {
         [string]
         $Path
     )
-    $null = & $Path
-    Write-Output ($LASTEXITCODE -gt 0)
+    $env:PATHEXT.Contains((Get-Item $Path).Extension.ToUpper())
 }
 
 $rootSearchPaths = @(