# NvAPI\_EnumPhysicalGPUs error in new driver

**URL:** <https://forums.developer.nvidia.com/t/nvapi-enumphysicalgpus-error-in-new-driver/56647>\
**Category:** NVAPI\
**Created:** [December 31, 2017, 8:58am UTC](https://forums.developer.nvidia.com/t/nvapi-enumphysicalgpus-error-in-new-driver/56647 "2017-12-31T08:58:29Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![sungoco](https://developer.download.nvidia.com/images/forums/profile-default-devtalk-84.png) [@sungoco](https://forums.developer.nvidia.com/u/sungoco)\
**Post date:** [December 31, 2017, 8:58am UTC](https://forums.developer.nvidia.com/t/nvapi-enumphysicalgpus-error-in-new-driver/56647/1 "2017-12-31T08:58:29Z")

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NvAPI\_EnumPhysicalGPUs works well in driver version “22.21.13.8253”, but it always returns device\_not\_found after i upgrade the driver to the lastest. why?