# Simbrief Downloader not authenticating **URL:** \ **Category:** Downloader\ **Created:** [January 9, 2026, 9:56pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253 "2026-01-09T21:56:59Z")\ **Posts on this page:** 8\ **Page:** 1
**Author:** ![cazrlhullman](https://avatars.discourse-cdn.com/v4/letter/c/5daacb/32.png) [@cazrlhullman](https://forum.navigraph.com/u/cazrlhullman)\ **Post date:** [January 9, 2026, 9:56pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/1 "2026-01-09T21:56:59Z")
My simbrief downloader stopped authenticating recently. It was working normally before. I reinstalled the program after deleting the cache in my temp folder. I use Firefox as browser but I have also tried Chrome and edge all as default browser. When it opens the webpage I login with my account, the webpage says I am authenticated and the downloader app starts loading but than goes back to authenticating with the loading circle, or sometimes even a unable to connect to the server. I also tried installing it on my second PC with the same issues. I was expecting more posts about this but it seems I am the only one experiencing this. What could be the issue here? Thanks in advance! ---
**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:** [January 9, 2026, 10:29pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/2 "2026-01-09T22:29:09Z")
To check your internet connection, try connecting via a hotspot on your mobile phone. Also, try resetting your Router. Cheers Ian ---
**Author:** ![cazrlhullman](https://avatars.discourse-cdn.com/v4/letter/c/5daacb/32.png) [@cazrlhullman](https://forum.navigraph.com/u/cazrlhullman)\ **Post date:** [January 10, 2026, 6:38pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/3 "2026-01-10T18:38:30Z")
Thanks for your response! I can’t test on a mobile network but i did reset my router fully and it did not work. I also noticed it takes me a whopping 27 minutes to download the simbrief downloader from the website. I remember this to be normal speed in the past. My internet connection is fine for everything else. About two weeks ago the downloader stopped working. I am clueless. ---
**Author:** ![Tomato2377](https://avatars.discourse-cdn.com/v4/letter/t/85f322/32.png) [@Tomato2377](https://forum.navigraph.com/u/Tomato2377)\ **Post date:** [May 3, 2026, 6:11pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/4 "2026-05-03T18:11:51Z")
Hello, was just wondering if you found a solution to this problem? I am encountering the same issue today with no luck in fixing it ---
**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:** [May 3, 2026, 9:29pm UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/5 "2026-05-03T21:29:38Z")
Hi…, Welcome. This is typically an issue in connecting your computer to the SimBrief server via the many links involved. We suggest you try a different internet connection, such as a mobile hotspot. Also, you can restart your router. Cheers Ian ---
**Author:** ![Tomato2377](https://avatars.discourse-cdn.com/v4/letter/t/85f322/32.png) [@Tomato2377](https://forum.navigraph.com/u/Tomato2377)\ **Post date:** [May 4, 2026, 12:36am UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/6 "2026-05-04T00:36:50Z")
Hi Ian, yes your suggestions worked! I created a mobile hotspot using my phone to get simbrief downloader to verify my Navigraph account. Then I needed to reset my router which fixed the second issue of simbrief downloader not communicating with the Navigraph server, so I was able to download my flightplans to the sim. All of this fixed the more critical issue of my airliners working properly in MSFS2020. \*\*Side note - I reinstalled Flybywire SimBridge, which may have also played a part in my airliners working correctly. This was a very frustrating experience and I hope this information will help other people who come across this problem. Many thanks. ---
**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:** [May 4, 2026, 1:57am UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/7 "2026-05-04T01:57:38Z")
You are welcome. Glad it is resolved. Happy flying Ian ---
**Author:** ![system](https://europe1.discourse-cdn.com/flex013/uploads/navigraph1/original/1X/4cc83e90d70ab312b1bd2d7527bddad309607265.png) [@system](https://forum.navigraph.com/u/system)\ **Post date:** [May 11, 2026, 1:58am UTC](https://forum.navigraph.com/t/simbrief-downloader-not-authenticating/22253/8 "2026-05-11T01:58:39Z")
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