---
layout: docs
page_title: Troubleshoot ADFS and SAML
description: >-
  Troubleshoot problems in Vault when using use Active Directory Federation
  Services (ADFS) as an SAML provider.
---

# Troubleshoot AD FS: Before you start

Troubleshooting guidance for solving problems with AD FS and SAML.

## Temporarily enable verbose logging

<Warning title="Not appropriate for production">

  Expanding SAML response data is a **temporary** change. Do not leave verbose
  logging on in production as SAML responses may contain sensitive information.

</Warning>

1. Enable verbose logging for your SAML plugin:

   ```shell-session
   $ vault write auth/<SAML_PLUGIN_PATH>/config \
      default_role="<ADFS_ROLE>"                \
      verbose_logging=true
   ```

1. Stream the debug logs directly to the terminal:

   ```shell-session
   $ vault monitor -log-level=debug
   ```

## Analyze the expanded SAML response 

To debug SAML problems, consider the following fields in the expanded response
objects:

- **`role`** - the configuration details of your SAML role
- **`user context`** - details about the client connecting to Vault

When debugging SAML problems, start with the bound subjects and bound attributes
of your SAML role. The provided values should match the attribute details in the
user context. For example:

<CodeBlockConfig hideClipboard highlight="2,18">

```json
[DEBUG] auth.saml.auth_saml_1d2227e7: validating user context for role: api=callback role_name=default-saml
role="{
  "token_bound_cidrs":null,
  "token_explicit_max_ttl":0,
  "token_max_ttl":0,
  "token_no_default_policy":false,
  "token_num_uses":0,
  "token_period":0,
  "token_policies":["default"],
  "token_type":0,
  "token_ttl":0,
  "BoundSubjects":["*@example.com","*@ext.example.com"],
  "BoundSubjectsType":"glob",
  "BoundAttributes":{"groups":["VaultAdmin","VaultUser"]},
  "BoundAttributesType":"string",
  "GroupsAttribute":"groups"
}"
user context="{
  "attributes":
  {
    "groups":["Domain Users","VaultAdmin"],
    "http://schemas.xmlsoap.org/ws/2005/05/identity/claims/emailaddress":["rs@example.com"]
  },
  "subject":"rs@example.com"
}"
```

</CodeBlockConfig>


## Troubleshooting walkthroughs

- [AD FS error 320](/vault/docs/auth/saml/troubleshoot-adfs/adfs-event-320)
- [Automatic group mapping fails](/vault/docs/auth/saml/troubleshoot-adfs/bad-mapping)
- Clients cannot connect to Vault: [Invalid `BoundSubjects`](/vault/docs/auth/saml/troubleshoot-adfs/boundsubjects)
