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Dropbox (IdP-initiated) Integration Guide


Use this guide to enable SecureAuth IdP-initiated Multi-Factor Authentication and Single Sign-on (SSO) access via SAML to Dropbox.

For Service Provider (SP)-initiated access, refer to Dropbox (SP-initiated) Integration Guide


1. Have a Dropbox for Business account

Note: SSO is available for only this pricing tier

2. Create a New Realm for the Dropbox integration

3. Configure the following tabs in the Web Admin before configuring the Post Authentication tab:

  • Overview – the description of the realm and SMTP connections must be defined

  • Data – an enterprise directory must be integrated with SecureAuth IdP

  • Workflow – the way in which users will access this application must be defined

  • Multi-Factor Methods – the Multi-Factor Authentication methods that will be used to access this page (if any) must be defined

SecureAuth IdP Configuration Steps



1. In the Profile Fields section, map the directory field that contains the user's Dropbox ID to the SecureAuth IdP Property

For example, add the Dropbox ID Field to the Email 2 Property if it is not already contained somewhere else


Click Save once the configurations have been completed and before leaving the Data page to avoid losing changes

Post Authentication


2. Select SAML 2.0 (IdP Initiated) Assertion Page from the Authenticated User Redirect dropdown in the Post Authentication tab in the Web Admin

3. An unalterable URL will be auto-populated in the Redirect To field, which will append to the domain name and realm number in the address bar (Authorized/SAML20IdPInit.aspx)

4. A customized post authentication page can be uploaded, but it is not required

User ID Mapping


5. Select the SecureAuth IdP Property that corresponds to the directory field that contains the Dropbox ID (Email 2)

6. Select urn:oasis:names:tc:SAML:1.1:nameid-format:emailAddress from the Name ID Format dropdown

7. Select False from the Encode to Base64 dropdown

SAML Assertion / WS Federation


8. Set the SAML Consumer URL to

9. Set the SAML Offset Minutes to make up for time differences between devices

10. Set the SAML Valid Hours to limit for how long the SAML assertion is valid

11. Select True from the Sign SAML Assertion dropdown


No configuration is required for the WSFed Reply To/SAML Target URL, WSFed/SAML Issuer, SAML Recipient, SAML Audience, SP Start URL, Append HTTPS to SAML Target, or Generate Unique Assertion ID fields


12. Leave the Signing Cert Serial Number as the default value, unless there is a third-party certificate being used for the SAML assertion

If using a third-party certificate, click Select Certificate and choose the appropriate certificate

13. Download the Assertion Signing Certificate, which will be sent to Dropbox

14. Provide the Domain in order to Download the Metadata File to send to Dropbox (if required)


Click Save once the configurations have been completed and before leaving the Post Authentication page to avoid losing changes

Forms Auth / SSO Token

Optionally, in the Forms Auth / SSO Token section, click the View and Configure FormsAuth keys/SSO token link to configure the token/cookie settings and configure this realm for SSO.


Dropbox Configuration Steps


1. Log into the Dropbox for Business account with administrator credentials

2. Click Admin Console in the lower left corner


3. In the Authentication section, check Enable single sign-on

4. Select Optional if SSO is not enforced; select Required if SSO is enforced

5. Set the Sign In URL to the SecureAuth IdP realm configured for Dropbox URL (e.g.

6. Upload the X.509 certificate used in the SecureAuth IdP Web Admin

7. Click Save Changes