diff --git a/src/define.sh b/src/define.sh
index 9b71a9d..543e531 100644
--- a/src/define.sh
+++ b/src/define.sh
@@ -281,6 +281,55 @@ getVersion() {
   return 0
 }
 
+validVersion() {
+
+  local id="$1"
+
+  case "${id,,}" in
+    "win11${PLATFORM,,}" | "win11${PLATFORM,,}-enterprise-eval")
+      return 0
+      ;;
+    "win10${PLATFORM,,}" | "win10${PLATFORM,,}-enterprise-eval")
+      return 0
+      ;;
+    "win10${PLATFORM,,}-enterprise-iot-eval" | "win10${PLATFORM,,}-enterprise-ltsc-eval")
+      return 0
+      ;;
+    "win81${PLATFORM,,}" | "win81${PLATFORM,,}-enterprise-eval")
+      return 0
+      ;;
+    "win2022-eval")
+      return 0
+      ;;
+    "win2019-eval")
+      return 0
+      ;;
+    "win2016-eval")
+      return 0
+      ;;
+    "win2012r2-eval")
+      return 0
+      ;;
+    "win2008r2")
+      return 0
+      ;;
+    "win7${PLATFORM,,}")
+      return 0
+      ;;
+    "winvista${PLATFORM,,}")
+      return 0
+      ;;
+    "winxpx86")
+      return 0
+      ;;
+    "core11" | "tiny11" | "tiny10")
+      return 0
+      ;;
+  esac
+
+  return 1
+}
+
 getLink() {
 
   # Fallbacks for users who cannot connect to Microsoft servers