# Windows meeting sdk and AUTHRET\_NETWORKISSUE

**URL:** <https://devforum.zoom.us/t/windows-meeting-sdk-and-authret-networkissue/80498>\
**Category:** Windows\
**Created:** [December 19, 2022, 1:56pm UTC](https://devforum.zoom.us/t/windows-meeting-sdk-and-authret-networkissue/80498 "2022-12-19T13:56:09Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![smlznnl](https://avatars.discourse-cdn.com/v4/letter/s/f19dbf/32.png) [@smlznnl](https://devforum.zoom.us/u/smlznnl)\
**Post date:** [December 19, 2022, 1:56pm UTC](https://devforum.zoom.us/t/windows-meeting-sdk-and-authret-networkissue/80498/1 "2022-12-19T13:56:10Z")

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Hello,  
At a location behind a very strict firewall, the normal zoom windows app works ok, but our application that uses the Windows SDK (v5.12.0.9016) fails during sdk authentication with the AUTHRET\_NETWORKISSUE error: the call to SDKAuth() succeeeds, then a pause of around 16 seconds, then the callback gets called with the AUTHRET\_NETWORKISSUE error

The operating system is Windows 10  
At other locations and/or cutomers our sdk application works well.

Is it possible to have a list of addresses and ports that should be opened in the firwall ?

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**Author:** ![system](https://us1.discourse-cdn.com/flex016/uploads/zoomdeveloper/original/3X/6/1/614bdd549b610bbaa46ff934617683a02bdaa03c.png) [@system](https://devforum.zoom.us/u/system)\
**Post date:** [January 18, 2023, 11:56pm UTC](https://devforum.zoom.us/t/windows-meeting-sdk-and-authret-networkissue/80498/2 "2023-01-18T23:56:53Z")

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Closed on January 18, 2023, 11:56pm UTC

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