diff --git a/src/client/authorization-code.ts b/src/client/authorization-code.ts
index b2a7180..eafc1d2 100644
--- a/src/client/authorization-code.ts
+++ b/src/client/authorization-code.ts
@@ -230,6 +230,11 @@ async function getWebCrypto(): Promise<typeof window.crypto> {
 
   // Browsers
   if ((typeof window !== 'undefined' && window.crypto)) {
+    if (!window.crypto.subtle?.digest) {
+      throw new Error(
+        "The context/environment is not secure, and does not support the 'crypto.subtle' module. See: https://developer.mozilla.org/en-US/docs/Web/API/Crypto/subtle for details"
+      );
+    }
     return window.crypto;
   }
   // Web workers possibly