# Connection failed on sudo apt update

## post by vmantri on Jul 18, 2022

Hi I get the connection failed error. I did all the basic things 1) Disabled firewall 2) Checked my router settings to make sure and i was able to ping that ip address 3) I backed up source list and ran apt clean

```
venkat@ml-turing-develop:~$ sudo apt update
[sudo] password for venkat:
Err:1 http://us.archive.ubuntu.com/ubuntu focal InRelease
  Connection failed [IP: 91.189.91.39 80]
Err:2 http://us.archive.ubuntu.com/ubuntu focal-updates InRelease
  Connection failed [IP: 91.189.91.38 80]
Err:3 http://archive.canonical.com/ubuntu focal InRelease
  Connection failed [IP: 185.125.188.12 80]
Err:4 http://us.archive.ubuntu.com/ubuntu focal-backports InRelease
  Connection failed [IP: 91.189.91.39 80]
Err:5 http://archive.lambdalabs.com/ubuntu focal InRelease
  Connection failed [IP: 52.218.246.130 80]
Err:6 http://us.archive.ubuntu.com/ubuntu focal-security InRelease
  Connection failed [IP: 91.189.91.38 80]
Reading package lists... Done
Building dependency tree
Reading state information... Done
All packages are up to date.
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal/InRelease  Connection failed [IP: 91.189.91.39 80]
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal-updates/InRelease  Connection failed [IP: 91.189.91.38 80]
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal-backports/InRelease  Connection failed [IP: 91.189.91.39 80]
W: Failed to fetch http://archive.canonical.com/ubuntu/dists/focal/InRelease  Connection failed [IP: 185.125.188.12 80]
W: Failed to fetch http://us.archive.ubuntu.com/ubuntu/dists/focal-security/InRelease  Connection failed [IP: 91.189.91.38 80]
W: Failed to fetch http://archive.lambdalabs.com/ubuntu/dists/focal/InRelease  Connection failed [IP: 52.218.246.130 80]
W: Some index files failed to download. They have been ignored, or old ones used instead.
```

## post by cody_b on Jul 18, 2022

Do you run into this problem every time you try to update your apt lists?

## post by vmantri on Jul 18, 2022

Yes correct everytime i run apt list

## post by cody_b on Jul 18, 2022

From this machine, are you able to reach other hosts? For example, try running:

`ping -c 10 lambdalabs.com`

## post by vmantri on Jul 18, 2022

I tried this earlier but this time i am noticing packet loss

```
venkat@ml-turing-develop:~$ ping -c 10 lambdalabs.com
PING lambdalabs.com (172.66.43.42) 56(84) bytes of data.
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=2 ttl=53 time=6.07 ms
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=4 ttl=53 time=6.35 ms
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=5 ttl=53 time=140 ms
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=6 ttl=53 time=5.92 ms
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=9 ttl=53 time=5.58 ms
64 bytes from 172.66.43.42 (172.66.43.42): icmp_seq=10 ttl=53 time=5.73 ms

--- lambdalabs.com ping statistics ---
10 packets transmitted, 6 received, 40% packet loss, time 9097ms
```

## post by cody_b on Jul 18, 2022

Are you able to try updating using a different Internet connection?

## post by vmantri on Jul 20, 2022

Yes i was able to update with a different wifi connection. I am going to close this ticket and reach out to ISP provider.