# \[Bug\] PMDG 77W nav data not installed correctly in MSFS 2024

**URL:** <https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232>\
**Category:** Navigraph Hub\
**Created:** [April 17, 2026, 12:31pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232 "2026-04-17T12:31:20Z")\
**Posts on this page:** 5\
**Page:** 1

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**Author:** ![andya1lan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/andya1lan/32/28653_2.png) [@andya1lan](https://forum.navigraph.com/u/andya1lan)\
**Post date:** [April 17, 2026, 12:31pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232/1 "2026-04-17T12:31:20Z")

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Hi,

I’m using Navigraph Hub 1.2.24 to update the navigation data for the PMDG 77W in MSFS 2024. After the installation appears to complete, the button reverts back to **INSTALL** instead of showing **REMOVE** , and in-sim the 77W still shows the default cycle 2404 data rather than the latest 2604.

I checked the WASM folder and found that the 77W nav data is being extracted to:

`WASM\MSFS2024\pmdg-aircraft-77w\work\`

However, I also own the PMDG 738, and its nav data is correctly extracted to:

`WASM\MSFS2024\pmdg-aircraft-738\work\NavigationData\`

The 738 data works perfectly in-sim. It looks like the 77W installation is missing the `NavigationData` subfolder — the files are being placed directly into `work\` instead of `work\NavigationData\`.

Since both aircraft are updated through the same Hub version and the 738 works fine, I believe this is a bug in the Hub’s installation path for the PMDG 77W package.

Could you please look into this? Thanks!

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**Author:** ![NAVData](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/navdata/32/30549_2.png) [@NAVData](https://forum.navigraph.com/u/NAVData)\
**Post date:** [April 17, 2026, 12:36pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232/2 "2026-04-17T12:36:29Z")

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Hi,  
Thanks for the report - I can confirm this. We will check it and fix it. I will come back to you when it´s done. Thanks again for the perfect report! Well done!

Cheers,  
Richard

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**Author:** ![andya1lan](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/andya1lan/32/28653_2.png) [@andya1lan](https://forum.navigraph.com/u/andya1lan)\
**Post date:** [April 17, 2026, 12:49pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232/3 "2026-04-17T12:49:28Z")

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Thanks for your quick confirmation!

Just wanted to let you know that I can update 2604 through PMDG built-in EFB, and after a sim restart everything works as expected.

Wish you a great weekend 😃

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**Author:** ![NAVData](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/navdata/32/30549_2.png) [@NAVData](https://forum.navigraph.com/u/NAVData)\
**Post date:** [April 17, 2026, 1:07pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232/4 "2026-04-17T13:07:36Z")

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Thanks, you too … should be working via Hub now too 😉

Cheers,  
Richard

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**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/navigraph1/original/1X/4cc83e90d70ab312b1bd2d7527bddad309607265.png) [@system](https://forum.navigraph.com/u/system)\
**Post date:** [April 19, 2026, 1:07pm UTC](https://forum.navigraph.com/t/bug-pmdg-77w-nav-data-not-installed-correctly-in-msfs-2024/23232/5 "2026-04-19T13:07:43Z")

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Closed on April 19, 2026, 1:07pm UTC

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