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P4 Virtual File Service Documentation | 2026.1

# P4 Virtual File Service (P4 VFS) Documentation

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P4 VFS is a client-side agent that reduces the wait time for file delivery from P4 Server to a client. Only file metadata is delivered on the initial transfer, such as a p4 sync command or P4V's "Get Latest".

### Introducing P4 VFS

Learn how a Windows-based client can benefit from deferred downloading.

### What’s new in P4 VFS

Learn about new features and enhancements in P4 VFS 2026.1.

### Enable P4V

Learn how P4V can use Altsync.

### Optional: Custom development

Learn how to implement a virtual file service for non-Windows clients.

Need more help? Browse all P4 documentation to find what you need.

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