# Trouble after installation of Navigraph

**URL:** <https://forum.navigraph.com/t/trouble-after-installation-of-navigraph/4196>\
**Category:** General non MSFS data\
**Tags:** client, howto\
**Created:** [February 7, 2021, 2:14am UTC](https://forum.navigraph.com/t/trouble-after-installation-of-navigraph/4196 "2021-02-07T02:14:35Z")\
**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, 2021, 5:06am UTC](https://forum.navigraph.com/t/trouble-after-installation-of-navigraph/4196/2 "2021-02-07T05:06:24Z")

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Hi Ryosei,

Welcome.

I don’t understand why installing Simlink should affect FF777 or Avitab.

I suggest :

1. See [FAQ - Simlink Install and Systray](https://forum.navigraph.com/t/faq-simlink-install-and-systray/58)
2. In Navigraph Simlink Plugin Settings, for your FS entry press Uninstall Simlink.
3. Use Windows to uninstall Simlink.
4. If they exist delete folders c:\Users\username\AppData\Roaming\Navigraph\Simlink and c:\Program Files\Navigraph\Simlink
5. Download and install latest [Simlink](https://navigraph.com/account/downloads/simlink).
6. Reinstall FF777

Please let us know how you get on.

Cheers  
Ian

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