solved Curl Error (6): Couldn't Resolve Host Name when trying to update DCS

[Kirk66]

Recently, when trying to update both my basic DCS and my Beta install using DCS updated 2.10.6.63, I get a "Curl Error (6): Couldn't Resolve Host Name when trying to update DCS" near the end of the download.

 

Autoupdate log attached.

 

Have not had any problems previously with same hardware/software configuration; however my download speed has been very slow lately (around 1.5mps most of the time - ugh) and I wonder if that is the problem.

 

Cheers,

 

Vulture

autoupdate_log.txt

[Flappie]

Hi. Were you able to complete the update after it happened, or is the updater still stuck?

[Kirk66]

Have tried updating both stable and beta at least twice, and they all end up stuck the same way. Game works fine, just cannot complete an update.

 

Vulture

[Flappie]

This updating issue is usually caused by security software, either antiviruses or firewalls.

Here are three threads of users who got rid of this issue:

 

Solution 1: disable antivirus during update (TOTAL 360 Security antivirus seems a little paranoid)

 

Solution 2: shut down firewall and use VPN.

 

Solution 3: Uninstall remnants of Avast Antivirus

 

[Kirk66]

Ok, I did some work on my wifi router and improved my download speed, and now have successfully downloaded and updated both my stable and beta editions of DCS. No other changes.

 

Good enough for me - now to play a bit.

 

Cheers,

 

Vulture

[Flappie]

Well done! Enjoy the game.

[thunderz]

On 1/20/2021 at 7:26 AM, Flappie said:

This updating issue is usually caused by security software, either antiviruses or firewalls.

Here are three threads of users who got rid of this issue:

 

Solution 1: disable antivirus during update (TOTAL 360 Security antivirus seems a little paranoid)

 

Solution 2: shut down firewall and use VPN.

 

Solution 3: Uninstall remnants of Avast Antivirus

 

I don't have an AV, and I still get an error.

[maximov]

Sometimes even Windows Defender causes problems for users. In addition, some network adapters have a built-in firewall. Please send an autoupdate_log.txt

[33rd_Elvis]

I have the same problem. I disable Microsoft defender and antivirus Programm but curl error 6 is still there.

[scutxd]

Hey, the game said "Couldn't resolve proxy name", neither the dcs nor the openbeta can not update.

autoupdate_templog.txt

[Flappie]

Hi. What happens if you ping "www.digitalcombatsimulator.com" in a CMD window?

C:\Users\Flav>ping www.digitalcombatsimulator.com

Envoi d’une requête 'ping' sur digitalcombatsimulator.com [93.115.211.146] avec 32 octets de données :
Réponse de 93.115.211.146 : octets=32 temps=17 ms TTL=49
Réponse de 93.115.211.146 : octets=32 temps=16 ms TTL=49
Réponse de 93.115.211.146 : octets=32 temps=23 ms TTL=49
Réponse de 93.115.211.146 : octets=32 temps=16 ms TTL=49

Statistiques Ping pour 93.115.211.146:
    Paquets : envoyés = 4, reçus = 4, perdus = 0 (perte 0%),
Durée approximative des boucles en millisecondes :
    Minimum = 16ms, Maximum = 23ms, Moyenne = 18ms

What about nslookup?

C:\Users\Flav>nslookup www.digitalcombatsimulator.com
Serveur :   lan.home
Address:  192.168.1.1

Réponse ne faisant pas autorité :
Nom :    digitalcombatsimulator.com
Address:  93.115.211.146
Aliases:  www.digitalcombatsimulator.com

 

Edited March 13, 2023 by Flappie

[scutxd]

20 hours ago, scutxd said:

Hey, the game said "Couldn't resolve proxy name", neither the dcs nor the openbeta can not update.

autoupdate_templog.txt 955 B · 1 download

The reason i have found. I added http_proxy and https_proxy env on Windows10, when i unset the envs, it works.

[Flappie]

Many thanks for letting us know.

[scutxd]

27 minutes ago, Flappie said:

Many thanks for letting us know.

It's my pleasure. What is the download utility reads the two envs?

[Flappie]

In my opinion, when you set an O.S. parameter, apps are supposed to use it, avoiding you the pain of telling each app that you want to use this very parameter.

So I'd call it normal. Wouldn't you?

[GeoS72]

Last week, I encountered the Curl Error (6) when attempting to reinstall DCS from scratch. I am VERY upset because over 3 days, the updater would fail to download and install properly. This also included the Repair process! Refer to the screenshot that shows the data usage (more about that shortly). Additionally, the download process exceeded 5 hours and then fail. I would get the Curl Error (6) message anywhere between the 3 - 5 hour mark. I was unable to run DCS because the initial install produced the same Curl Error (6) message just as it completed. Therefore, Windows would report the program was not installed properly.

On Wednesday (the day of Phantom release), the download failed once during the day after 6 hours. The download rate the updater would report was 10-11 Mbps. Later that (Wednesday) evening, the DCS update utility FINALLY downloaded and installed the update. Despite it reporting 11 Mbps, the download/install process took 45 minutes!

As another consequence of this failed download process, my computer had a difficult time accessing the internet. Web pages would fail to load and would take 8-10 tries to reload the page. It was PAINFUL to try to update DCS in the background and work from home at the same time. This has NEVER been a problem in the past.

Lastly, I want to address the data usage. As a result of these failed attempts to download and install DCS through the update process, it caused a HUGE spike in data usage. My ISP has an upper data usage limit of about 1.2 TB per month. As a result of this update, it rapidly pushed me beyond 950 GB in 3 days! This also coincided with a new billing cycle so I now have to actively manage my data use for the rest of this billing cycle (ends 18 Jun)!

This Curl Error (6) problem has to originate with ED servers. I tested my data transfer rates with other products (e.g. Steam) and the transfer rates matched my network settings. I was getting transfer rates that exceeded 95 Mbps. Again, I'd like to point out that on Wednesday evening (22 May 2024), the update process only took 45 minutes instead of the 5+ hours of failed downloads from 20 May - 22 May.

Here are the screenshot of data usage that shows the DCS download spike and one of the autoupdate logs. Moreover, this was installed on a FRESH copy of Windows 11. Fresh as in it was installed on 19 May! No 3rd party anti-virus software used, just Windows Defender.

autoupdate_log-2024-05-21.txt

Edited May 29, 2024 by GeoS72
Added note about anti-virus software.

[silverdevil]

On 5/29/2024 at 12:28 PM, GeoS72 said:

This Curl Error (6) problem has to originate with ED servers.

it is not ED servers with the issue otherwise the forum would be blowing up. you posted on a topic from a year ago which shows how atypical the issue is. the last update and all previous updates i have had no problems.

i suggest you getting with your ISP.

Edited May 31, 2024 by silverdevil

[GeoS72]

@silverdevil,

Thanks for the reply. While this problem may be atypical, it was very unusual to experience this issue. Especially since I was installing a fresh copy of DCS and having to install 47 modules. While your screenshot looks good, timing is everything. When did you run an update - within the past 2 days? I would argue that last week, there may have been some other factors at play that we aren't privy to? I recall connection/download issues when the Apache & Strike Eagle came out.

Perhaps there was some strange Windows 11 setting that needed to be changed? Maybe I needed to sacrifice a chicken, or ask God to change Pepsi to Coke. All I know is there was a problem and hopefully the log file would help. I just want to play DCS and not have to play log file detective.

It still grinds my gears thinking about the DAYS of delays and several failures to download/install DCS. It will be interesting to see feedback from ED.

[silverdevil]

10 hours ago, GeoS72 said:

When did you run an update - within the past 2 days?

i always run updates on the day or two after the release. my results never vary from one update to another.

10 hours ago, GeoS72 said:

All I know is there was a problem and hopefully the log file would help.

indeed. your log file indicates that there is a DNS or connectivity issue, likely at your end.

04095.812 ERROR: Got Curl error (6): Couldn't resolve host name
04096.861 ERROR: Conection to server 'www.digitalcombatsimulator.com' failed: Couldn't resolve host name
04096.861 ERROR: statistics failed with status -1
04096.874 STATUS: Curl error (6): Couldn't resolve host name

if this issue was global then, as i stated before, the forums would be blowing up.

do you have ISP equipment that can be restarted? can you check your DNS settings?

start by a PING to the web address

ping www.digitalcombatsimulator.com

Pinging digitalcombatsimulator.com [93.115.211.146] with 32 bytes of data:
Reply from 93.115.211.146: bytes=32 time=105ms TTL=56
Reply from 93.115.211.146: bytes=32 time=105ms TTL=56
Reply from 93.115.211.146: bytes=32 time=108ms TTL=56
Reply from 93.115.211.146: bytes=32 time=107ms TTL=56

Ping statistics for 93.115.211.146:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 105ms, Maximum = 108ms, Average = 106ms

also check you DNS settings with ipconfig/all and look for the line DNS Servers. what is that IP address?

[GeoS72]

@silverdevil,

Thanks for the suggestions. This issue academic since the problem only occurred over those 3 days. Please keep in mind that in the evening of May 22, the download speed and installation process took 45 minutes. From Sunday and most of the day on Wednesday, the update process took over 5 hours before Curl Error (6) would appear. I didn't play with any network settings. The problem appeared to resolve without my intervention. If the problem was on my end, then issues accessing the Internet would be more problematic and widespread to other sites. Since this issue was happening while I accessed the DCS servers, then I speculated the problem rested on the ED server side.

Since then, I updated the Win11 QoS levels and also flushed my DNS settings. Moments ago, I pinged the DCS website and the results are as follows:

Pinging digitalcombatsimulator.com [93.115.211.146] with 32 bytes of data:
Reply from 93.115.211.146: bytes=32 time=120ms TTL=48
Reply from 93.115.211.146: bytes=32 time=122ms TTL=48
Reply from 93.115.211.146: bytes=32 time=120ms TTL=48
Reply from 93.115.211.146: bytes=32 time=120ms TTL=48

Ping statistics for 93.115.211.146:
    Packets: Sent = 4, Received = 4, Lost = 0 (0% loss),
Approximate round trip times in milli-seconds:
    Minimum = 120ms, Maximum = 122ms, Average = 120ms

In the end, I'd like to think the issue could be a combination of issues. First, a fresh install of Windows 11. It may have some settings that could cause the networking issues. Changing the QoS settings may have helped but that was changed after the fact (and problem resolution). Second, timing could also play a hand at the problem. Maybe there were server issues on ED's side of the fence days before the Phantom release? I find it unusual that on the evening of a big DCS update/new module release that my connection issues with the DCS server suddenly fixed itself.

The big mystery is: What fixed the problem?

[silverdevil]

18 hours ago, GeoS72 said:

The big mystery is: What fixed the problem?

if you continue to have issues, you should start a new topic and / or put in a ticket to ED for help. maybe they can tell you if their systems are having problems.