# Simlink broken after WIN 11 Sept. update **URL:** \ **Category:** Simlink/Moving Map\ **Created:** [September 18, 2026, 9:53pm UTC](https://forum.navigraph.com/t/simlink-broken-after-win-11-sept-update/24329 "2026-09-18T21:53:43Z")\ **Posts on this page:** 4\ **Page:** 1
**Author:** ![strengthster](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@strengthster](https://forum.navigraph.com/u/strengthster)\ **Post date:** [September 18, 2026, 9:53pm UTC](https://forum.navigraph.com/t/simlink-broken-after-win-11-sept-update/24329/1 "2026-09-18T21:53:43Z")
### Simulator Version X-Plane 12 ### Operating System Windows 11 ### Description of the Issue After latest WIN 11 Sept. update simlink broken. Can still get charts overlaid in Navigraph charts, but there are no longer any charts available in the plane in aviTAB. Simlink keeps saying it has only old data. It seems to recognize XP has started, but in plane I can not open any charts. I’ve searched on line and tried many things, but microsoft seems to have completely shut simlink off from any external connections- without permission to do so. ### Attachments (Logs, Screenshots, Flight Plans) [simlink\_2026-09-18.dlog](https://forum.navigraph.com/uploads/short-url/9Dy5U8JvbJ53nPm6KfWvYYtnZqR.dlog) (6.9 KB) [X-Plane 12\_20260918125314\_log.txt](https://forum.navigraph.com/uploads/short-url/6Wlh5UpBVGH0AHxjHFv0xyIXp0I.txt) (94 Bytes) ---
**Author:** ![GordonNG](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/gordonng/32/27797_2.png) [@GordonNG](https://forum.navigraph.com/u/GordonNG)\ **Post date:** [September 19, 2026, 7:26am UTC](https://forum.navigraph.com/t/simlink-broken-after-win-11-sept-update/24329/2 "2026-09-19T07:26:56Z")
Hello, Thank you for the details and the logs, those are really helpful. Can you try the following, please, 1. Press the Windows key 2. Enter CMD, right click and run it as administrator 3. Then enter these one at a time - ipconfig/flushdns - netsh winsock reset - netsh int ip reset 4. Then reboot your computer. Once your computer is rebooted 1. Press the Windows key 2. enter CMD and type - nslookup [identity.api.navigraph.com](http://identity.api.navigraph.com) If that returns an address, all good. If it is still failing after this, set a public DNS on your computers network adapter. settings → network & internet → your network adapter → DNS server assignment → manual → IPv4 → Preferred 1.1.1.1, Alternate 8.8.8.8 Then reboot and retest the nslookup command again. ---
**Author:** ![strengthster](https://avatars.discourse-cdn.com/v4/letter/s/439d5e/32.png) [@strengthster](https://forum.navigraph.com/u/strengthster)\ **Post date:** [September 19, 2026, 9:08pm UTC](https://forum.navigraph.com/t/simlink-broken-after-win-11-sept-update/24329/3 "2026-09-19T21:08:02Z")
Hello, Gordon, I completed the troubleshooting steps you recommended. I reset the Windows network stack using the recommended netsh commands and restarted the computer. After rebooting, I verified that Internet connectivity and DNS resolution are working normally, including resolving and loading a site I had not previously visited. I then tested the Navigraph components separately: • Navigraph Charts is working normally. I removed the current flight plan, imported an older KSFO–KLAX flight plan, opened the IRNMN2 arrival chart, and successfully displayed it as an overlay. • SimBrief functionality also appears to be working normally. • Simlink remains broken. After starting X-Plane and opening AviTab, all Navigraph chart directories still show 0 charts, exactly as before the network reset. I also installed all Windows updates that were available before performing these tests. At this point, the problem appears isolated to Simlink or its communication path rather than to general Internet connectivity, DNS, Navigraph Charts, or SimBrief. I previously supplied the Simlink logs, which you indicated were helpful. Since the recommended Windows network reset did not resolve the problem, please let me know what you determine is causing the Simlink failure and what resolution Navigraph recommends. I am not an IT professional and am not comfortable making further changes to the Windows networking configuration without a specific, established fix. Thank you, Gary Someone replied to your post. > ![](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/gordonng/45/27797_2.png "GordonNG") | [GordonNG](https://forum.navigraph.com/u/gordonng) > September 19 | > > - | - | Hello, Thank you for the details and the logs, those are really helpful. Can you try the following, please, 1. Press the Windows key 2. Enter CMD, right click and run it as administrator 3. Then enter these one at a time - ipconfig/flushdns - netsh winsock reset - netsh int ip reset 4. Then reboot your computer. Once your computer is rebooted 1. Press the Windows key 2. enter CMD and type - nslookup [identity.api.navigraph.com](http://identity.api.navigraph.com) If that returns an address, all good. If it is still failing after this, set a public DNS on your computers network adapter. settings → network & internet → your network adapter → DNS server assignment → manual → IPv4 → Preferred 1.1.1.1, Alternate 8.8.8.8 Then reboot and retest the nslookup command again. ---
**Author:** ![GordonNG](https://dub1.discourse-cdn.com/flex013/user_avatar/forum.navigraph.com/gordonng/32/27797_2.png) [@GordonNG](https://forum.navigraph.com/u/GordonNG)\ **Post date:** [September 20, 2026, 8:25am UTC](https://forum.navigraph.com/t/simlink-broken-after-win-11-sept-update/24329/4 "2026-09-20T08:25:46Z")
Hi Gary, We’re simply establishing whether anything upstream from you (ISP or Microsoft themselves) had an adverse effect on your computer. Seeing as this is the only report of Simlink not working as it should, I would bank that is the case. The commands and checks I suggested are quite well documented as troubleshooting steps so there is nothing to worry about with those. Regarding AviTab, - Sign into your Navigraph account, go to your account profile and click the **Devices** link on the left panel. - Sign out any Simlink and AviTab authentications - Authenticate both of these again.