UMDF 1.x-Only Reference

[Warning: UMDF 2 is the latest version of UMDF and supersedes UMDF 1. All new UMDF drivers should be written using UMDF 2. No new features are being added to UMDF 1 and there is limited support for UMDF 1 on newer versions of Windows 10. Universal Windows drivers must use UMDF 2. For more info, see Getting Started with UMDF.]

This section contains reference pages that apply only to UMDF versions 1.11 and earlier. If you are writing a new UMDF driver, see Getting Started with WDF.

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