Hello Folks;

So my ISP just upgraded my network from 75/75 to 300/300 (not that I needed it) along with the latest and greatest Router since mine was over 10 years old. Now keep in mind I never had issues running MSFS 2020 with my old set up.

Since the upgrade MSFS 2020 will hang on the "New Activity" loading screen using my Ethernet connection. I tried everything possible including disconnecting and reconnecting to get it to work, eventually it will connect but will get the message that the bandwidth is too slow which definitely should not be the case. The Wi-Fi works great no issues at all but it was just with the Ethernet which is normally the other way around in most cases.

After days of searching the internet I came across 2 articles including MSFS stating that disabling Internet Protocol V6 (TCP/IP V6) addresses the problem, which I did via Ethernet Properties and it worked great no issues,

 

My question is has anyone else experienced the same issue and have they tried something else that worked. Not sure why this will only affect MSFS 2020 granted that I don't do any other games or simulation on my PC, so I am not sure what other games my be affected. Again, this only occurs with Ethernet not Wi-Fi which has "Internet Protocol V6 (TCP/IP V6)" enabled. Strange.

Any input would be greatly appreciated.

Thanks.

Kindest Regards.

Forshaw.

. 

Interesting case!

Will follow the thread ! Hope there's feedback coing from other users with identical networking conf.

Edited October 30, 20232 yr by jcomm

I am running Windows 10

To work MSFS needs the Teredo protocol (It is part of the mechanisms of transition from IPv4 to IPv6 and consists of encapsulating IPv6 packets in UDP datagrams over IPv4 between the client and the Teredo relay, with the help of a Teredo server.)
A priori, I would say that enabling IPV6 on Windows 10 while using software that uses Teredo can not work well.
Apparently this problem would have been solved under Windows 11.

I just made a flight on LFPO with awful lags, I deactivated IPV6 on the fly and then relaunched the same flight and there very fluid.

@lagaffe,  excellent hint !

Thank you !

in my case, this freezing problem during sim boot up for about 2-3 min (at around new activities screen) started after SU12, tried with IP V6 on/OFF, with Ether net or WI-FI with no change.

All of my loading screen lag/ freeze issues were addon related...

55 minutes ago, blueshark747 said:

All of my loading screen lag/ freeze issues were addon related...

Which addon?

1 hour ago, micstatic said:

Which addon?

GAIST Ultra V3 caused those loading issues for me. It was my fault though I had more than one Great Lakes folder installed.

2 hours ago, micstatic said:

Which addon?

I made a quick test,

1- with nothing in community folder  start up time from mouse press to start page=1:37 min

2- tried most of add-ons one by one, found one scenery (Kuwait City+ airport) taking full extra min.

3- found FSLTL basic folder takes about 33sec to load.

4- total load time with both of those items out of community folder, sim loaded in 2:04 min

5- used AIG AI models for load testing and turned to be as same as FSLTL, well it was 3sec more.

6- returned every thing to CF except for Kuwait stuff, I saved full minuet to start page 2:37min, FSLTL is mandatory for me.

now I need to find a BAT file to make MSFS start with out those introduction videos to save additional 20-25sec.

 

Note: I don't have GAIST.

Edited October 30, 20232 yr by penta_a

Had something similar when I got a new router a few months back.   Although as you stated your internet connection is working along with your access to the web.  Does windows 10's taskbar show you have

internet.  My issue ultimately came down to the changes in my router settings somehow did not allow the MS internet check to be completed even though my connection and operation were fine.  Ultimately MSFS utilized that same check in the system to determine if I "had" internet access, and wouldn't get beyond the startup screen.  I ended up modifying the internet access check in the registry to point at a third party site that worked, and ultimately allowed MSFS to see that all was working and continued to load.   Probably not your issue, but  worth a look at your system tray icons.....

18 hours ago, lagaffe said:

To work MSFS needs the Teredo protocol (It is part of the mechanisms of transition from IPv4 to IPv6 and consists of encapsulating IPv6 packets in UDP datagrams over IPv4 between the client and the Teredo relay, with the help of a Teredo server.)
A priori, I would say that enabling IPV6 on Windows 10 while using software that uses Teredo can not work well.
Apparently this problem would have been solved under Windows 11.

A couple of inaccuracies here. MSFS doesn't use IPv6 so whether you have IPv6 enabled or not doesn't matter. To test if MSFS uses IPv6 simple turn off IPv4 and try to connect - it won't. Second, Teredo has long been deprecated and is not in use. If your ISP supports IPv6 then it will use dual stack native IPv6 and native IPv4 - no encapsulation is done. With that said, most web resources that support IPv6 *prefer* IPv6 if it's available on your host, but if it's not then it will simply use IPv4. There is no "IPv6" encapsulation in use unless you decide to use an IPv6 tunnel broker like Hurricane Electric's popular service.

If you want to know if IPv6 is actually being used (not just enabled) type in "what's my IP address" in google and it will show you an IPv6 128-bit address. If not it will show your IPv4 32-bit address. Either way, it makes no difference to MSFS servers. So if you're having connection issues there is something either misconfigured on your router or on your PC.

HTH,

Mike T.

13 hours ago, penta_a said:

I made a quick test,

1- with nothing in community folder  start up time from mouse press to start page=1:37 min

2- tried most of add-ons one by one, found one scenery (Kuwait City+ airport) taking full extra min.

3- found FSLTL basic folder takes about 33sec to load.

4- total load time with both of those items out of community folder, sim loaded in 2:04 min

5- used AIG AI models for load testing and turned to be as same as FSLTL, well it was 3sec more.

6- returned every thing to CF except for Kuwait stuff, I saved full minuet to start page 2:37min, FSLTL is mandatory for me.

now I need to find a BAT file to make MSFS start with out those introduction videos to save additional 20-25sec.

 

Note: I don't have GAIST.

UPDATE:

installed SU14 (BETA) and all above is absulet, the sim takes about 4:08min now to load, meaning I have to wait for final release to judge before going through all add-ons again.

Hi Folks;

Thanks for all of your responses, I appreciate it. So I can across this from MSFS 2020 FAQ.

ENABLE PORT FORWARDING

In some cases, your router may be blocking communication with Microsoft Flight Simulator servers. Unable to Connect is a typical error message associated with this issue. To resolve this, you may need to manually forward these ports.

Every router is a little different. If you run into problems with this guide, try searching your routers’ support site for a more detailed guide on Port Forwarding.

1. Open your Web Browser (ex. Microsoft Edge, Firefox, etc.)
2. Type your Default Gateway into the URL Address bar to Access Your Route
   • You may be prompted with a popup window requesting your Username and Password
   • Check your router manual for info on the default gateway
3. Look for the Port Forwarding page once you have you are on your router’s configuration page
4. Add entries for Microsoft Flight Simulator using the following port ranges:
   • TCP: 3074
   • UDP: 88, 3074, 30000 to 31000.

Port forwarding will not improve the quality of your connection to the game servers. It will only help in cases where you are unable to contact the Microsoft Flight Simulator servers while you are online.

 

My ISP just sent me another New Router (they all say it's new but sometimes it's not) so I will try it and see if I have the same problem. Maybe my current Router has a setting that's blocking the Server. If the problem persists I will then have to try Enable Port Forwarding and or confirm other settings.

Again, this issue only started once I upgraded my Router, nothing else changed.

Thanks again.

Kindest Regards.

awc.