# Navdata center error

**URL:** <https://forum.navigraph.com/t/navdata-center-error/7383>\
**Category:** General non MSFS data\
**Created:** [February 6, 2022, 5:52pm UTC](https://forum.navigraph.com/t/navdata-center-error/7383 "2022-02-06T17:52:30Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![Ian](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/ian/32/154_2.png) [@Ian](https://forum.navigraph.com/u/Ian)\
**Post date:** [February 7, 2022, 12:22am UTC](https://forum.navigraph.com/t/navdata-center-error/7383/2 "2022-02-07T00:22:28Z")

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Hi…,

Do you by chance have Firefox as your default browser? If so please see [FAQ - Firefox may start an app when Simlink Starts](https://forum.navigraph.com/t/faq-firefox-may-start-an-app-when-simlink-starts/2995).

For ease of follow up, please post separate thread for MCDU issue explaining what steps you have taken and what results, preferably with screenshots using [Guide to posting Screenshots](https://forum.navigraph.com/t/posting-guide-uploading-screenshots-or-images/116/2).

Cheers  
Ian

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