# Navigraph Navdata Center won't launch **URL:** \ **Category:** Navigraph Hub\ **Created:** [June 5, 2021, 6:55pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255 "2021-06-05T18:55:02Z")\ **Posts on this page:** 6\ **Page:** 1
**Author:** ![Bandus](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/bandus/32/3845_2.png) [@Bandus](https://forum.navigraph.com/u/Bandus)\ **Post date:** [June 5, 2021, 6:55pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/1 "2021-06-05T18:55:02Z")
I am running Navdata Center on Windows. When I attempt to launch it I receive the following error: ![](https://europe1.discourse-cdn.com/flex013/uploads/navigraph1/original/2X/a/a9c464059af674bdc8eb62f9c4f98465790e2a86.png) This started happening after I attempted to install FMS data for Little Navmap and P2ATC. I’m not sure how to resolve it or what I did wrong. I downloaded each data file, pointed it to the Little Navmap and P2ATC directories respectively and tried to open Navdata Center. Can anyone help? ---
**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:** [June 5, 2021, 9:28pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/2 "2021-06-05T21:28:41Z")
Hi…, Welcome. Please use Windows to uninstall Navigraph Navdata Center. Then download and installed latest [Release notes - Navigraph Navdata Client beta](https://forum.navigraph.com/t/release-notes-navigraph-navdata-client-beta/1848) into default locations. Cheers Ian ---
**Author:** ![Bandus](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/bandus/32/3845_2.png) [@Bandus](https://forum.navigraph.com/u/Bandus)\ **Post date:** [June 5, 2021, 10:07pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/3 "2021-06-05T22:07:53Z")
Greetings! Thank you for the reply! I did that and the NavData Centern opens once again. Thank you! A related question: After I install the addons for P2ATC and LittleNavmap, should they appear in the packages section of the Navdata Center? If they are supposed to appear, but do not, what might I try to resolve that? Thank you for your help! Edit: Also, if they are not supposed to appear, is there anything else I would need to do after installing them to make sure they were working in Little Navmap and P2ATC? ---
**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:** [June 5, 2021, 10:53pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/4 "2021-06-05T22:53:27Z")
You are welcome. Glad it is working. Navigraph Data Center is currently for MSFS and MSFS Addons. Pilot2ATC and Little NavMap are updated in [FMS Data Manager](https://navigraph.com/account/downloads/fmsdm) In time we shall migrate all Navdata updates to Navigragh Navdata Center. Cheers Ian ---
**Author:** ![Bandus](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/bandus/32/3845_2.png) [@Bandus](https://forum.navigraph.com/u/Bandus)\ **Post date:** [June 5, 2021, 10:54pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/5 "2021-06-05T22:54:56Z")
Thank you once more! I appreciate your help! ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/navigraph1/original/1X/4cc83e90d70ab312b1bd2d7527bddad309607265.png) [@system](https://forum.navigraph.com/u/system)\ **Post date:** [June 7, 2021, 10:55pm UTC](https://forum.navigraph.com/t/navigraph-navdata-center-wont-launch/5255/6 "2021-06-07T22:55:35Z")
Closed on June 7, 2021, 10:55pm UTC This topic was automatically closed 2 days after the last reply. New replies are no longer allowed.