Add the information contained in external issues (can be closed).

Enabling-SSO-support-using-OpenId-Connect.md

@@ -148,9 +148,25 @@ Server configuration should look like:
 - `Failed to discover OpenID provider: Failed to parse server response`: 
   - First ensure that the Authority endpoint with `/.well-known/openid-configuration` appended is reacheable.
   - Next check that the document return `id_token_signing_alg_values_supported: ["RS256"]`\
-    If it returns `HS256` then selecting the default signing key again should fix the issue ([steps](https://github.com/Timshel/vaultwarden/issues/107#issuecomment-3200007338)).
+    If it returns `HS256` then selecting the default signing key again should fix the issue.\
+    Steps:
+    1. Open **Authentik admin panel** > **Providers** > Open your **Vaultwarden provider**
+    2. Click **Edit** > Change the **Signing key** to any of your keys
+        - If unsure choose the built-in one from Authentik
+    3. Click **Update**
+    4. Retry
+
+ 
 - `Failed to contact token endpoint: Parse(Error ... Invalid JSON web token: found 5 parts`: \
- This error is probably due to an encrypted token (JWE), ensure that no encryption key is used ([steps](https://github.com/dani-garcia/vaultwarden/issues/6230#issuecomment-3245196399)).
+  This error is probably due to an encrypted token (JWE), ensure that no encryption key is used.\
+  Steps:
+  1. Open **Authentik admin panel** > **Providers** > Open your **Vaultwarden provider**
+  2. Click **Edit** > Make sure Encryption Key is empty.
+  3. **If not empty**: Select -------- in the dropdown.
+  4. Make sure not to touch the **Signing Key**, a valid certificate has to be selected
+  5. Click **Update**
+  6. Retry
+
 
 ## Casdoor