Unified identity services provider Centrify Corp is making it easier for businesses to securely use file sharing service Dropbox by bringing Microsoft (MSFT) Active Directory-based single sign-on (SSO), access control and mobile management to Dropbox for Business.

Centrify’s technology fixes an annoying problem for business users who rely on Dropbox for Business: elimination of password sprawl with Active Directory-based SSO across various computing and mobile devices, while also providing IT with centralized control over access to hosted applications and resources.

Centrify said organizations with Centrify SSO for Dropbox can leverage existing Active Directory infrastructure and skillsets to gain one-click access to Dropbox for Business and all their software as a service (SaaS) apps.

Ari Friedland, head of business development for Dropbox for Business, said in prepared remarks, “We’re leveraging the SSO industry standard, SAML, and working with Centrify to let our customers leverage their Active Directory identities for seamless access to Dropbox, with one less password to remember and maintain.”

The Centrify and Dropbox partnership goes beyond single sign-on for mobile users, offering a “Zero Sign-on” feature.

Centrify Head of Business Development Shreyas Sadalgi said in a prepared statement that the relationship with Drobox demonstrates the “power and traction of Centrify’s Active Directory-based SaaS security and single sign-on for accessing and authenticating to today’s leading business SaaS applications.”

The Centrify solution is available at no charge for organizations using fewer than two SaaS applications. For organizations using Centrify for more than three SaaS apps, the Centrify solution is priced at $4 per user per month, which includes technical support and access to feature updates.

Separately, Dropbox shut down cloud-based photograph library service Snapjoy last week.

Centrify announced in early June that it plans to launch a version of its Active Directory management and single sign-on (SSO) solution specifically for Microsoft (MSFT) Office 365.