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Network error: Client authentication response timeout


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1 hour ago, Satanshu Mishra said:

To be honest, three weeks ago this was working fine. Then I decided to reset my Computer eight times because of a Windows issue and four days later when i start up VATSIM it gives me this error. So i dont know if this is a vPilot issue or a Vatsim server issue but it looks more like the later. Can someone give 2.5.1 a try and let us know? I dont know if its possible to use this version of vPilot but it may be worth a shot to either isolate vPilot as the problem or further solidify the problem being purely with Vatsim servers.

 

Although logically, if this were a VATSIM issue, then how are people from other parts of the world having no issue of the sort? Its all very strange...🤔

Did you got any reply from VATSIM itself. I remember you mentioned sending an email to them?

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I managed to stay connected (on USA-East) for a flight from EPWA to EDDK. On landing i disconnected to check if i can reconnect and now its the same error on all the servers. Yet again for s

Thank you Andreas, have forwarded an email as suggested. Will post any response I have from the Team here..    

I If i try to connect while at OMDB(Dubai) its not working. I tried at different airports in USA and able to connect all the servers. Europe no luck

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I can't be 100% sure, but I am as sure as I can be that this is not a vPilot issue. The only changes between 2.5.1 and 2.5.2 had to do with model matching. There haven't been any networking changes in vPilot for quite a long time. And someone in this thread said they were having the same issue with swift.

Does the level of traffic in the area where you fly have anything to do with it? In other words, when you cannot stay connected, is there a lot of traffic around? Or do you experience the disconnects even when there is no other traffic nearby?

Developer: vPilot, VRC, vSTARS, vERAM, VAT-Spy

Senior Controller, Boston Virtual ARTCC

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Posted (edited)
3 hours ago, Ross Carlson said:

I can't be 100% sure, but I am as sure as I can be that this is not a vPilot issue. The only changes between 2.5.1 and 2.5.2 had to do with model matching. There haven't been any networking changes in vPilot for quite a long time. And someone in this thread said they were having the same issue with swift.

Does the level of traffic in the area where you fly have anything to do with it? In other words, when you cannot stay connected, is there a lot of traffic around? Or do you experience the disconnects even when there is no other traffic nearby?

I cannot be certain. I believe I was disconnected when with Traffic and without. At EGLL I can clear hear people if I pre-select the ground freq. Whether there were too many people? No clue as I cant tell but there are never more than 10 people at EGLL in general. I also connect to EDDM which was empty at the time and that also resulted in an instant disconnect. 

 

4 hours ago, umair saleem said:

Did you got any reply from VATSIM itself. I remember you mentioned sending an email to them?

I wasn't the one who sent the email. I asked a Supervisor online to ask developers to look at this thread and try to solve the problem. Some indeed came on page one and asked all network issues to be sent to a certain email - one which I believe multiple people sent the issue to. I didn't want to spam the developers with the same issue over and over so I am awaiting their reply (As multiple people said that they will keep this forum update with the responses to the email) but if no one posts an update in the next 24hrs then too will send a email.

 

@Ross Carlson Can you take a look and update us if the  source of the issue has been found? or about any progress? We would greatly appreciate it if you could do so and inform us so that we have both sides of the story and work towards solving the issue.

Edited by Satanshu Mishra
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2 hours ago, Satanshu Mishra said:

@Ross Carlson Can you take a look and update us if the  source of the issue has been found? or about any progress? We would greatly appreciate it if you could do so and inform us so that we have both sides of the story and work towards solving the issue.

This would be for the network guys to look into, as it does not seem to be a vPilot issue.

Developer: vPilot, VRC, vSTARS, vERAM, VAT-Spy

Senior Controller, Boston Virtual ARTCC

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5 hours ago, Ross Carlson said:

I can't be 100% sure, but I am as sure as I can be that this is not a vPilot issue. The only changes between 2.5.1 and 2.5.2 had to do with model matching. There haven't been any networking changes in vPilot for quite a long time. And someone in this thread said they were having the same issue with swift.

Does the level of traffic in the area where you fly have anything to do with it? In other words, when you cannot stay connected, is there a lot of traffic around? Or do you experience the disconnects even when there is no other traffic nearby?

Yes Ross !!, have tested with Swift Client and was getting similar error there as well. 

Last day @ around 0200hrs (GMT), was able to stay connect to any of the Servers from all of the major Airports, including those of European one's without any drops, successfully !!! but during those hours traffic was very minimal across the region.  so as @Ross Carlson had pointed out could it be something to do with the traffic around during peak hours?

During the peak hours (ie. while unable to connect ) did try reducing the values under Performance tab in Vpilot, but that did not help either...

 

7 hours ago, umair saleem said:

Did you got any reply from VATSIM itself. I remember you mentioned sending an email to them?

Yet to receive any further updates.

Did send them a reminder though.. lets see...

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58 minutes ago, Mohamed Zaheer Zafarullah said:

During the peak hours (ie. while unable to connect ) did try reducing the values under Performance tab in Vpilot, but that did not help either...

That will only affect the number of aircraft rendered in your sim, it won't have any affect on the amount of aircraft data that is sent over the network to your computer.

Developer: vPilot, VRC, vSTARS, vERAM, VAT-Spy

Senior Controller, Boston Virtual ARTCC

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Posted (edited)

Bit of a strange one, i managed to connect for a few minutes in Manchester (EGCC). After a disconnection, i quickly reconnected and it seemed to stay connected for a those few minutes, but during that time not a single other aircraft was injected into my sim. I purposely chose Manchester since a VATSIM tracker app showed about 9 aircraft on ground there.  After a restart of vPilot i could not consistently connect to any of the servers for more than 30 seconds (and it still did not show any other aircraft during those 30 seconds). For reference i'm using vPilot v2.5.2.

Two nights ago i also attempted to connect in KORD and was presented with the same client authenticication response timeout error, i moved to KMIA and was able to connect successfully for about 30 minutes when the timeout once again reared its ugly head and booted me out, with no subsequent reconnection attemps being successful.

Further to Ross's suggestion that it could be related to heavy traffic areas, I tried to connect in a region with little to no other traffic (HKJK) and still was unable to stay connected. Although, the USA is quite a traffic heavy area as well and it seems to connect just fine (most of the time anyway...).

This is all very, very strange.

I did email the address linked in an earlier post but i'm yet to hear from them, i should think they're experiencing a huge boom in server loads what with the global quarantine so they're most likely busy fixing other issues.

Edited by Daniel Richardson
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Man !,

I feel relieved in knowing I'm not the only one. Bittersweet. I can attest as a VERY active simmer that for me at least it IS traffic/ATC connections related. Sydney was the single good performing server after the UAE servers spun down. I am now stuck on Singapore. The only way I can connect is if there 1, maybe 2 other instances ATC or traffic around. Any more and it will time out. You can see it sometimes try and load traffic, and ATC will pop up, and suddenly .... boom. Disconnected. I have been battling this for the longest time. Restarting the router or not, if there are other instances to load, the connection will fail. I even followed a suggestion of forwarding ports in my Etisalat router.

My only recourse is to go to an airport where there's not ATC or traffic, connect there and slowly slew to where I want to be. An act of futility. However for me, if I am able to connect, I remain connected no matter how busy it gets. It just seems to not like seeing network data to process immediately upon connection.

It indeed is very very frustrating at the level of filtering in this region. @Ross Carlson I am willing to contact my ISP but I do not know what to tell them as I have no idea what IP address, server site etc these connections use. You know, the technical stuff.

Hopefully, one way or the other this can be resolved in time.

Xander Koote - OMDB

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Posted (edited)
29 minutes ago, Xander Koote said:

Man !,

I feel relieved in knowing I'm not the only one. Bittersweet. I can attest as a VERY active simmer that for me at least it IS traffic/ATC connections related. Sydney was the single good performing server after the UAE servers spun down. I am now stuck on Singapore. The only way I can connect is if there 1, maybe 2 other instances ATC or traffic around. Any more and it will time out. You can see it sometimes try and load traffic, and ATC will pop up, and suddenly .... boom. Disconnected. I have been battling this for the longest time. Restarting the router or not, if there are other instances to load, the connection will fail. I even followed a suggestion of forwarding ports in my Etisalat router.

My only recourse is to go to an airport where there's not ATC or traffic, connect there and slowly slew to where I want to be. An act of futility. However for me, if I am able to connect, I remain connected no matter how busy it gets. It just seems to not like seeing network data to process immediately upon connection.

It indeed is very very frustrating at the level of filtering in this region. @Ross Carlson I am willing to contact my ISP but I do not know what to tell them as I have no idea what IP address, server site etc these connections use. You know, the technical stuff.

Hopefully, one way or the other this can be resolved in time.

Xander Koote - OMDB

You might be onto something here mate, i too used to use the UAE servers until they disappeared, and then the Sydney one until a couple of weeks ago until that one also went the way of the dodo. I then used Singapore with marginal success, but now i'm back using UK1 or UK2 and just flying around the states. Only time i've had Issues in the states was at Chicago and then Miami a few days ago. No ATC but it got busy and disconnected me.  

I can also see it try and load traffic and ATC into the sim just before it disconnects.

I too would gladly talk to Etisalat if i knew what to tell them/if they even cared (because let's face it, any of us who've had the misfortune of dealing with them know how few f's they give about their customers!😅)

Edited by Daniel Richardson
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Hey Guys;

It seems to be traffic related as i try to connect at OMDB during a peak of traffic and was not able to say more then 30 secs.

Later off peak it stayed connected. Today again i am trying to connect at ENGM with full ATC coverage and lots traffic and same results 30 secs only.

Anyone got any reply from VATSIM?

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I have reinstalled windows . Changed the router . Still no hope

Now I am in flight as DL569 . I departed from DNMM in Africa . everything was good . my arrival is EDDF . while approaching the European area I had the same Client authentication error

 

CMD traceroute :-

 

Tracing route to voice1.vatsim.uk [172.105.98.241]

over a maximum of 30 hops:

 

  1     5 ms    12 ms    <1 ms  dlinkrouter [192.168.0.1]

  2    14 ms     9 ms     2 ms  31.215.198.2

  3     4 ms     8 ms     8 ms  10.246.250.141

  4     8 ms    14 ms     5 ms  195.229.4.66

  5    15 ms    14 ms    12 ms  195.229.0.166

  6     6 ms     6 ms     8 ms  195.229.0.166

  7    94 ms    92 ms   104 ms  be5.palermo16.pal.seabone.net [195.22.197.16]

  8   111 ms   117 ms   112 ms  ae21.milano51.mil.seabone.net [195.22.205.39]

  9   192 ms   217 ms   192 ms  ntt-verio.milano51.mil.seabone.net [93.186.128.157]

10   255 ms   254 ms   258 ms  ae-1.r01.mlanit01.it.bb.gin.ntt.net [129.250.5.82]

11     *      201 ms   200 ms  ae-6.r21.frnkge13.de.bb.gin.ntt.net [129.250.3.183]

12   177 ms   177 ms   177 ms  ae-0.r20.frnkge13.de.bb.gin.ntt.net [129.250.6.1]

13   250 ms   255 ms   251 ms  ae-11.r21.nwrknj03.us.bb.gin.ntt.net [129.250.6.54]

14   261 ms   269 ms   260 ms  ae-2.r00.toroon01.ca.bb.gin.ntt.net [129.250.2.142]

15   216 ms   219 ms   216 ms  199.245.16.94

16     *        *        *     Request timed out.

17     *        *        *     Request timed out.

18   212 ms   223 ms   212 ms  10.215.0.12

19   209 ms   209 ms     *     voice1.vatsim.uk [172.105.98.241]

20   209 ms   208 ms   208 ms  voice1.vatsim.uk [172.105.98.241]

 

Trace complete.

 

 

/////////////////

 

vPilot Log

 

[18:32:02] vPilot version 2.5.2

[18:32:03] Performing version check...

[18:32:04] Version check complete. You are running the latest version.

[18:32:04] Checking for updated model matching data...

[18:32:04] Model matching data check complete. You have the most up-to-date data.

[18:32:04] Checking for changes to installed models...

[18:32:04] No changes found.

[18:32:04] Startup complete.

[18:32:04] Attempting simulator connection...

[18:32:05] Connected to simulator: Lockheed Martin® Prepar3D® v4 (4.5.14.34698)

[18:32:05] Custom model matching rules loaded.

[18:32:05] Model matching rules generated.

[18:32:07] Connecting to network...

[18:32:07] Connected to network.

[18:32:08] SERVER: Welcome back to VATSIM! Our new voice technology is now live - if you have any questions or need support visit vats.im/audio for required downloads, instructions and tutorial videos. If you need further support visit the Audio for VATSIM forums at vats.im/afv

[18:32:09] Connected to voice server.

[18:32:10] Flight plan filed.

[18:39:04] Disconnected from voice server. Reason: Lost server connection

[18:39:04] Voice will attempt to automatically reconnect.

[18:39:05] Connected to voice server.

[18:45:57] AAL195 on 122.800: LEBL, heading to rwy7R departure

[18:50:03] AAL195 on 122.800: Lebl, ocupando pista 7R

[18:52:45] TYS777 on 122.800: Over W LEMH

[18:53:58] AAL195 on 122.800: FL60, cleared to FL380

[18:55:32] SDG002 on 122.800: liee tfc p/b s/u

[18:58:50] SDG002 on 122.800: liee tfc taxy h/p f rwy 14

[18:59:06] RYR710 on 122.800: LIRQ trf, taxi to RWY23

[19:01:07] TYS777 on 122.800: Final RWY19 LEMH

[19:01:59] SDG002 on 122.800: liee tfc l/u t/o rwy 14 kovas6d dep init clb 6000 feet

[19:06:25] RYR710 on 122.800: LIRQ trf, takeoff RWY23

[19:13:33] AAL195 on 122.800: FL380, dct RASPA

[19:13:58] IBE145 on 122.800: LEPA traffic starting descent from FL330, LUNIK1P arrival

[19:24:09] Requesting ATIS for EURM_CTR.

[19:24:10] EURM_CTR ATIS:

[19:24:10] Eurocontrol (Maastrich Sector) // CPDLC LOGON EURM

[19:24:10] ATC only above FL245 if local CTR is offline - Info at vacc-euc.org

[19:24:10] UIR ATC for EBBU LKAA LFEE EDGG EDMM EDWW EHAA LOVV LSAS

[19:24:10] Estimated Logoff Time: z

[19:25:58] EURM_CTR on 135.450: CSA095, Call Geneva 134.325

[19:26:34] AFR645 on 135.450: ready for descent in 20n

[19:26:40] EURM_CTR on 135.450: AFR645, Switch 122.8

[19:26:46] AFR645 on 135.450: 122.8

[19:27:51] CSA095 on 135.450: 134.325 bye bye

[19:27:51] EURM_CTR on 135.450: CSA095, hello?

[19:27:53] EURM_CTR on 135.450: CSA095, thx

[19:32:00] EURM_CTR on 135.450: ASL78Q, pass your message?

[19:32:30] EURM_CTR on 135.450: SBI117, Call 125.450

[19:32:34] EURM_CTR on 135.450: ASL78Q, radar contact

[19:32:40] Disconnected from voice server. Reason: Lost server connection

[19:32:40] Voice will attempt to automatically reconnect.

[19:32:41] Connected to voice server.

[19:34:29] TOM74GF on 135.450: With you FL 360 inbound ARGAX (Text only)

[19:34:47] EURM_CTR on 135.450: TOM74GF, radar contact, sq 1103 dct KOTUN

[19:35:19] TOM74GF on 135.450: 1103 KOTUN

[19:35:23] EURM_CTR on 135.450: UAE33, radar contact, dct INBED

[19:35:28] Disconnected from network.

[19:35:28] Disconnected from voice server.

[19:35:29] Connecting to network...

[19:35:29] Connected to network.

[19:35:30] Connected to voice server.

[19:35:30] SERVER: Welcome back to VATSIM! Our new voice technology is now live - if you have any questions or need support visit vats.im/audio for required downloads, instructions and tutorial videos. If you need further support visit the Audio for VATSIM forums at vats.im/afv

[19:35:31] Flight plan filed.

[19:35:42] Network error: Client authentication response timeout

[19:35:44] Disconnected from network.

[19:35:45] Disconnected from voice server.

[19:36:07] Connecting to network...

[19:36:07] Connected to network.

[19:36:08] SERVER: Welcome back to VATSIM! Our new voice technology is now live - if you have any questions or need support visit vats.im/audio for required downloads, instructions and tutorial videos. If you need further support visit the Audio for VATSIM forums at vats.im/afv

[19:36:08] Connected to voice server.

[19:36:37] Network error: Client authentication response timeout

[19:36:39] Disconnected from network.

[19:36:39] Disconnected from voice server.

[19:36:53] Connecting to network...

[19:36:53] Connected to network.

[19:36:54] SERVER: Welcome back to VATSIM! Our new voice technology is now live - if you have any questions or need support visit vats.im/audio for required downloads, instructions and tutorial videos. If you need further support visit the Audio for VATSIM forums at vats.im/afv

[19:36:54] Connected to voice server.

[19:37:15] Network error: Client authentication response timeout

[19:37:17] Disconnected from network.

[19:37:18] Disconnected from voice server.

[19:37:27] Connecting to network...

[19:37:28] Connected to network.

[19:37:28] Connected to voice server.

[19:37:29] SERVER: Welcome back to VATSIM! Our new voice technology is now live - if you have any questions or need support visit vats.im/audio for required downloads, instructions and tutorial videos. If you need further support visit the Audio for VATSIM forums at vats.im/afv

[19:37:54] Network error: Client authentication response timeout

[19:37:54] Disconnected from network.

[19:37:55] Disconnected from voice server.

 

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36 minutes ago, umair saleem said:

What VPN are you using?

Hotspot shield VP

I have already a subscription 

I know it's not the right way because connecting to vatsim should be done without a third party addon .. but this a temporary solution until the new network infrastructure is released 

As i was passing the African aerospace

I got into European sector (EURM_FSS)

I contacted that ATC after 20 mins approx i faced that client authentication error . I have downloaded the vpn and i completed my trip ti Frankfurt like a charm

 

Note that these ports related to voice are forbidden here in UAE by the government 

After the deployment of UAE server . It's normal to face those errors

I remember also on Teamspeak i faced similar error 

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  • 2 weeks later...
Posted (edited)
On 5/10/2020 at 12:03 AM, Ahmed Saadawey said:

Hotspot shield VP

I have already a subscription 

I know it's not the right way because connecting to vatsim should be done without a third party addon .. but this a temporary solution until the new network infrastructure is released 

As i was passing the African aerospace

I got into European sector (EURM_FSS)

I contacted that ATC after 20 mins approx i faced that client authentication error . I have downloaded the vpn and i completed my trip ti Frankfurt like a charm

 

Note that these ports related to voice are forbidden here in UAE by the government 

After the deployment of UAE server . It's normal to face those errors

I remember also on Teamspeak i faced similar error 

Thanks for you input. Unfortunately, here in the UAE VPN's are not legal and therefore we cannot be using them freely. It may seem that the regions network restrictions may be blocking certain connections leading to the error. The error still remains unfortunately meaning I may not be able to connect to Vatsim anytime soon unless I fly US routes (Which too is very glitchy these days). If anyone has any updates, please keep posting them here. 

Regards,

Satanshu

Edited by Satanshu Mishra
Grammar Mistake
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Hi guys, 

I'm new to VATSIM, i've been on it for the past 3 days flying mostly from major Asian airports. But today i kept getting disconnected whenever im in Asian or European countries, but seems okay in GCC. I live in UAE aswell. I just wanna share i was able to fix this problem with the help of a paid VPN service.

 

Regards,

Mark

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Posted (edited)

I can also confirm that the use of a paid VPN service results in me being able to connect in the UK and Europe without issue. Looks like it really is the ISP's screwing us! 

It's annoying that it's resorted to this, since we used to be able to connect freely and without any issue when the UAE servers were up, and especially since the use of VPN's in the UAE is frowned upon (but NOT illegal in our use case, see: this post from a law firm) just be careful if you're going to use them!

Edited by Daniel Richardson
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  • 3 weeks later...

I have been using vpilot since it came out with no issues until the last two weeks.  Now I keep getting disconnected sometimes 10 mins after being connected or two to three hours into the flight  with this: "The server has failed to respond to the authentication challenge" as the reason.

The other day I was flying a 10 hr flight and it never disconnected. Today I was flying for 8 hrs from KMEM to EDDK, it was terrible I stayed disconnected have the time. 

I live here in the US so I usually us US-East or West with no problems, I also have tried different servers out side the US with the same issues. I know there is nothing on my side that has changed I am running 200 mp on my internet, which is very good.

Can someone please help with this new issue.

Thanks Walt

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Is the reason for those connection issues "packet drops"?

I am puzzled as to how a VPN helps (from a technical point of view) as it usually tends to slow down the connection? What is the difference between those rubbish ISP connections and a connection via VPN? 

 

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The ISP over here interferes with IP's with any sort of voice I believe. So in our case, the VPN bypasses this, and since it is not used to abuse local rules it's not illegal. Furthermore, you don't need blazing speeds for VATSIM data so it really helped.

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I did a packet drop test and after 30 seconds, it starts dropping packets like crazy..... It does not drop packets if you don't stress the test too much. This could explain why when there is a lot of traffic/data on VATSIM, a connection is not possible, but when things are quiet, a connection is possible. The thing is, if a connection is possible when VATSIM is quiet, then VATSIM in itself is possibly not blocked (other blocked software do not work at all, as you know).

The ISP is possibly throttling back the connection, limiting the data that goes through.....not giving it its full capacity.

VPN does not seem to drop many packets (even if stressed on the test), therefore connection is good 24/7. The connection is slow though if you want to do other things....

So it looks like connection speed has nothing to do with packets drop and packet drop is responsible for the inability to connect....

Edited by Fred Navarro
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Sorry for the late replay Fred. I was able to due an 10hr flight Thursday with no problems. It was from VTBS to NZAA which there was not a lot of traffic in that area. I guess it has something to due with high traffic issues. Not sure why there is an issue with this now never had this happen before. I will look into the VPN if this keeps accruing.

Thanks again guys...

Walt

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