Endless Failed to download Map Chunks.

[Fourtoo]

After a week of trying various server, 3 separate ISP. 2 land connections, 1 mobile network, disabled firewall, AV, reinstalling, modded, none modded I just cant get to play online, everything works up to the point of downloading map chunks.. I have only once managed to play online and since then no server will play.. I'm lost for what to do. The only reason I bought the game was the idea of playing online and now I have nothing but a single player game. Can anyone share some insight into this issue.

[Fourtoo]

I'm joining vanilla servers, no mods installed,

My Home connection was 100Mb-D/80Mb-U Fiber Optic,

2nd was 300Mb Fiber Optic.

[Fourtoo]

1 2 ms 2 ms <1 ms 192.*
2 3 ms 1 ms 1 ms 103.*(removed for security)
3 16 ms 16 ms 21 ms 103.*
4 25 ms 24 ms 21 ms 182.*
5 116 ms 121 ms 157 ms 116.*
6 149 ms 161 ms 129 ms de-cix1.rt.act.fkt.de.retn.net [80.81.192.73]
7 144 ms 149 ms 150 ms ae4-9.RT.LDC.WAW.PL.retn.net [87.245.233.38]
8 154 ms 156 ms 152 ms GW-SkyNet.retn.net [87.245.245.175]
9 145 ms 145 ms 145 ms q3.skynet.net.pl [109.206.192.10]

after this was constant time outs. Destination server IP is 109.206.206.113. So reaches their network looking at the final IP but maybe not the server.

[Fourtoo]

1 <1 ms <1 ms <1 ms 192.*
2 1 ms 1 ms 3 ms 103.*
3 17 ms 15 ms 16 ms 103.*
4 18 ms 42 ms 22 ms 182.*
5 137 ms 142 ms 137 ms 116.*
6 * * * Request timed out.
7 * * * Request timed out.
8 * * * Request timed out.
9 * * * Request timed out.
10 135 ms 143 ms 143 ms vl1272.lon1-eri1-d1-a75.uk.eu [213.186.32.253]
11 * * * Request timed out.
12 * * * Request timed out.
13 * * * Request timed out.
14 140 ms 137 ms 134 ms ns3170198.ip-54-37-245.eu [54.37.245.120]

Trace complete.

Ping Avg 117

Another server I tried.. this time compete, but when joining I get same map chunk failed to download.

[Delta]

Sorry to bring up an older post like this, but I would like to point out I've had this issue since may last year, and still are not able to play online. I gave up on trying to find a solution. It's a singleplayer game now apparently.

It's a shame to see the devs not prioritizing this issue a bit more, it's very common among a lot of people and it renders online impossible to play.

I've tried the new Steam Relay option and It's the same result, except now I also get a message saying " Warning: Server has port 16262 closed. " I've been in contact with the host and they say its open so w/e

[Delta]

So a little update, maybe this information will be userful to you or someone else..

I called my ISP today and explained the situation in detail, and I mentioned some of the things you pointed out such as.. maybe its my ISP blocking spesific packets or P2P for looking suspicious, which he said they don't do at all.

Furthermore he decided to give me a standard IP rather then dynamic, which is supposed to help with gaming and other issues. I then tried to connect to a zomboid server and I actually noticed change since may last year... I managed to load in 30 chunks before I got kicked for " failed to download map files" yes, 30 chunks, consistently 30 every time.

It did not fix the issue, but at the very least there was a small change, idk what it means yet.

I used to be able to play on servers with just as many mods with even more ping then this one, but one day it just stopped working.

[Beard]

A good test whether the ISP is causing any issues is to connect through a mobile connection, if you have a mobile network you can use your phone to share a connection with the PC if you have a Wifi connection.
Alternatively, you can use a VPN as that can bypass the ISP interference in some cases.

[Arcanant]

I got a problem with "Failed to download map from the server" as well. It has been really frustrating lately. I have contacted my ISP and they say there should be no issues caused from their end, and they have checked multiply times as I was persistend.
|------------------------------------------------------------------------------------------|
| WinMTR statistics |
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
| localIP - 0 | 75 | 75 | 1 | 1 | 2 | 1 |
| irelevantIP - 0 | 75 | 75 | 3 | 3 | 5 | 3 |
| justmakingsuremyipisnotrevealed - 0 | 75 | 75 | 16 | 17 | 23 | 18 |
| justmakingsuremyipisnotrevealed01 - 0 | 75 | 75 | 16 | 17 | 21 | 18 |
| iamnotanitguy - 0 | 75 | 75 | 23 | 23 | 25 | 24 |
| iamnotanitguy2 - 0 | 75 | 75 | 22 | 24 | 25 | 23 |
| 62.74.30.102 - 31 | 33 | 23 | 22 | 22 | 24 | 22 | <---shows packet loss but it shouldn't matter because the packets still reach the destination at the end.
| ae3-100-ucr1.atm.cw.net - 0 | 75 | 75 | 23 | 24 | 40 | 24 |
| ae24-xcr1.sof.cw.net - 0 | 75 | 75 | 40 | 42 | 64 | 42 |
| gtt-gw.sof.cw.net - 0 | 75 | 75 | 40 | 45 | 198 | 42 |
| ae9.cr6-fra2.ip4.gtt.net - 0 | 75 | 75 | 65 | 68 | 90 | 68 |
| ip4.gtt.net - 0 | 75 | 75 | 66 | 67 | 80 | 69 |
| 213-239-224-85.clients.your-server.de - 0 | 75 | 75 | 72 | 73 | 75 | 74 |
| ex9k1.dc14.fsn1.hetzner.com - 0 | 75 | 75 | 72 | 74 | 93 | 74 |
|static.243.85.202.116.clients.your-server.de - 0 | 75 | 75 | 72 | 73 | 76 | 72 |
|__|__|__|__|__|__|__|
Letting it continue further it result to this
|------------------------------------------------------------------------------------------|
| WinMTR statistics |
| Host - % | Sent | Recv | Best | Avrg | Wrst | Last |
|------------------------------------------------|------|------|------|------|------|------|
| HiddenIP - 0 | 285 | 285 | 0 | 1 | 15 | 0 |
| HiddenIP - 0 | 285 | 285 | 1 | 2 | 15 | 1 |
| HiddenIP - 0 | 285 | 285 | 16 | 17 | 29 | 17 |
| HiddenIP - 0 | 285 | 285 | 16 | 17 | 29 | 17 |
| HiddenIP - 0 | 285 | 285 | 22 | 23 | 29 | 23 |
| HiddenIP - 0 | 285 | 285 | 22 | 23 | 29 | 23 |
| 62.74.30.102 - 43 | 106 | 61 | 22 | 22 | 24 | 22 |
| ae3-100-ucr1.atm.cw.net - 0 | 285 | 285 | 22 | 24 | 63 | 25 |
| ae24-xcr1.sof.cw.net - 0 | 285 | 285 | 40 | 41 | 73 | 40 |
| gtt-gw.sof.cw.net - 0 | 285 | 285 | 39 | 44 | 212 | 40 |
| ae9.cr6-fra2.ip4.gtt.net - 0 | 285 | 285 | 65 | 69 | 136 | 66 |
| ip4.gtt.net - 0 | 285 | 285 | 65 | 67 | 85 | 66 |
| 213-239-224-85.clients.your-server.de - 0 | 285 | 285 | 72 | 73 | 81 | 72 |
| ex9k1.dc14.fsn1.hetzner.com - 0 | 285 | 285 | 72 | 74 | 98 | 73 |
|static.243.85.202.116.clients.your-server.de - 0 | 285 | 285 | 71 | 72 | 78 | 72 |
|__|__|__|__|__|__|__|

So it is not a connection issue I believe. I have done a fresh installation (after cleaning manually all the leftover files from /user/zomboid and workshop as well folder.
Also tried the trick to lower the resolution to lower the required map chunks to download. I would like to note that I have 0 issues playing multiplayer and connecting on vanilla client servers (no mods).

[Beard]

I would recommend following the mentioned tips as well in that case.

[Fourtoo]

UPDATE

My resolution was I changed ISP. Despite the old ISP denying port blocking or anything that would cause issues, changing my ISP resolved my issues ten fold, the instant I clicked log in to server I could see the change, the pre map chunk data loaded in the first instance, previously they took around 30 seconds to download, and map chunks now download in 10-15 seconds. Since I've had no issues of concern, occasionally I will get the failed to download, but this seems to be after the server restarts and will only happen once, twice on a busy day, so this seems to be just a load on the rejoin aspect of connecting while many others are also trying. Otherwise all is good, Thank you for you advice Enigma it was appreciated, I hope others have success in their efforts to play MP.

[Primedew]

facing the exact same issue......even though i have been playing on the server since march

[Fourtoo]

My final solution was a 3rd ISP, this seemed to fix everything.. granted it was not the most convenient resolution. Apparently it was some issue with the ISP blocking certain ports, a common thing where I live currently in India.

One other solution I found which helped occasionally with the previous was to lower the game resolution to the lowest option prior to joining the servers, and returning to normal resolution once i joined. Again not the most convenient work around, but it lowered the number of map chunks which seemed to prevent the timeout occurring and allowing me to join the server. Once on the server I was able to download the chunks as they were required and only really found issues when driving fast through many chunks which would cause a time out.. but not so often I had big issues.