# MIC mismatch

**URL:** <https://www.thethingsnetwork.org/forum/t/mic-mismatch/44480>\
**Category:** Migrating Devices to V3\
**Created:** [February 18, 2021, 10:53am UTC](https://www.thethingsnetwork.org/forum/t/mic-mismatch/44480 "2021-02-18T10:53:47Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![kersing](https://www.thethingsnetwork.org/forum/user_avatar/www.thethingsnetwork.org/kersing/32/44777_2.png) [@kersing](https://www.thethingsnetwork.org/forum/u/kersing)\
**Post date:** [February 18, 2021, 11:22am UTC](https://www.thethingsnetwork.org/forum/t/mic-mismatch/44480/2 "2021-02-18T11:22:38Z")

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Please take a few minutes and learn how to [format](https://www.thethingsnetwork.org/forum/t/how-do-i-format-my-forum-post-howto/8735) your posts.

Have you checked your AppKey is correct?

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_[View the full topic](https://www.thethingsnetwork.org/forum/t/mic-mismatch/44480)._