A restricted transmogrifying driver platform is described herein. In one or more implementations, a platform is provided that enables a restricted execution environment for virtual private network (VPN) drivers and other transmogrifying drivers. The platform may be implemented as an operating system component that exposes an interface through which drivers may register with the platform and be invoked to perform functions supported by the platform. The restricted execution environment places one or more restrictions upon transmogrifying drivers that operate via the platform. For instance, execution may occur in user mode on a per-user basis and within a sandbox. Further, the platform causes associated drivers to run as background processes with relatively low privileges. Further, the platform may suspend the drivers and control operations of the driver by scheduling of background tasks. Accordingly, exposure of the transmogrifying drivers to the system is controlled and limited through the platform.