[APIM] Update validate-jwt-policy documentation

Updated the validate-jwt-policy documentation to include the new validate-connectivity attribute and updated date.

Author: dlepow

articles/api-management/validate-jwt-policy.md

@@ -6,7 +6,7 @@ author: dlepow
 
 ms.service: azure-api-management
 ms.topic: reference
-ms.date: 01/27/2025
+ms.date: 02/25/2026
 ms.author: danlep
 ---
 
@@ -36,7 +36,7 @@ The `validate-jwt` policy enforces existence and validity of a supported JSON we
     require-signed-tokens="true | false"
     clock-skew="allowed clock skew in seconds"
     output-token-variable-name="name of a variable to receive a JWT object representing successfully validated token">
-  <openid-config url="full URL of the configuration endpoint, for example, https://login.constoso.com/openid-configuration" />
+  <openid-config url="full URL of the configuration endpoint, for example, https://login.constoso.com/openid-configuration" validate-connectivity="true | false"/>
   <issuer-signing-keys>
     <key id="kid-claim" certificate-id="mycertificate" n="modulus" e="exponent">Base64 encoded signing key</key>
     <!-- if there are multiple keys, then add additional key elements -->
@@ -84,7 +84,7 @@ The `validate-jwt` policy enforces existence and validity of a supported JSON we
 
 | Element             | Description                                                                                                                                                                                                                                                                                                                                           | Required |
 | ------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | -------- |
-| openid-config       |Add one or more of these elements to specify a compliant OpenID configuration endpoint URL from which signing keys and issuer can be obtained.<br/><br/>Configuration including the JSON Web Key Set (JWKS) is pulled from the endpoint every 1 hour and cached. If the token being validated references a validation key (using `kid` claim) that is missing in cached configuration, or if retrieval fails, API Management pulls from the endpoint at most once per 5 min. These intervals are subject to change without notice.                                                                                                                                              <br/><br/>The response should be according to specs as defined at URL: `https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata`. <br/><br/>For Microsoft Entra ID use the OpenID Connect [metadata endpoint](../active-directory/develop/v2-protocols-oidc.md#find-your-apps-openid-configuration-document-uri) configured in your app registration such as:<br/>- v2 `https://login.microsoftonline.com/{tenant-name}/v2.0/.well-known/openid-configuration`<br/>- v2 Multi-Tenant ` https://login.microsoftonline.com/organizations/v2.0/.well-known/openid-configuration`<br/>- v1 `https://login.microsoftonline.com/{tenant-name}/.well-known/openid-configuration` <br/>- Customer tenant (preview) `https://{tenant-name}.ciamlogin.com/{tenant-id}/v2.0/.well-known/openid-configuration` <br/><br/> Substituting your directory tenant name or ID, for example `contoso.onmicrosoft.com`, for `{tenant-name}`.                                                                                                                                                                                            | No       |
+| openid-config       |Add one or more of these elements to specify a compliant OpenID configuration endpoint URL from which signing keys and issuer can be obtained.<br/><br/><br/><br/>Optionally, set `validate-connectivity` attribute to `false` to disable check of endpoint availability if URL can't be resolved via public DNS.<br/><br/>Configuration including the JSON Web Key Set (JWKS) is pulled from the endpoint every 1 hour and cached. If the token being validated references a validation key (using `kid` claim) that is missing in cached configuration, or if retrieval fails, API Management pulls from the endpoint at most once per 5 min. These intervals are subject to change without notice.                                                                                                                                              <br/><br/>The response should be according to specs as defined at URL: `https://openid.net/specs/openid-connect-discovery-1_0.html#ProviderMetadata`. <br/><br/>For Microsoft Entra ID use the OpenID Connect [metadata endpoint](../active-directory/develop/v2-protocols-oidc.md#find-your-apps-openid-configuration-document-uri) configured in your app registration such as:<br/>- v2 `https://login.microsoftonline.com/{tenant-name}/v2.0/.well-known/openid-configuration`<br/>- v2 Multi-Tenant ` https://login.microsoftonline.com/organizations/v2.0/.well-known/openid-configuration`<br/>- v1 `https://login.microsoftonline.com/{tenant-name}/.well-known/openid-configuration` <br/>- Customer tenant (preview) `https://{tenant-name}.ciamlogin.com/{tenant-id}/v2.0/.well-known/openid-configuration` <br/><br/> Substituting your directory tenant name or ID, for example `contoso.onmicrosoft.com`, for `{tenant-name}`.                                                                                                                                                                                            | No       |
 | issuer-signing-keys | A list of Base64-encoded security keys, in [`key`](#key-attributes) subelements, used to validate signed tokens. If multiple security keys are present, then each key is tried until either all are exhausted (in which case validation fails) or one succeeds (useful for token rollover). <br/><br/>Optionally, specify a key by using the `id` attribute to match the token's `kid` claim. To validate a token signed with an asymmetric key, optionally specify the public key using a `certificate-id` attribute with value set to the identifier of a certificate uploaded to API Management, or the RSA modulus `n` and exponent `e` pair of the signing key in Base64url-encoded format.               | No       |
 | decryption-keys     | A list of Base64-encoded keys, in [`key`](#key-attributes) subelements, used to decrypt the tokens. If multiple security keys are present, then each key is tried until either all keys are exhausted (in which case validation fails) or a key succeeds.<br/><br/> To decrypt a token encrypted with an asymmetric key, optionally specify the public key using a `certificate-id` attribute with value set to the identifier of a certificate uploaded to API Management.         | No       |
 | audiences           | A list of acceptable audience claims, in `audience` subelements, that can be present on the token. If multiple audience values are present, then each value is tried until either all are exhausted (in which case validation fails) or until one succeeds. At least one audience must be specified.                                                                     | No       |