Unable to update Ubuntu 12.04: Connection refused
97015
111: Connection Refused
113379
Updating the repository isn't working
6156
Java Networking "Connection Refused: Connect"
52726
Why does every server I try say it can't connect?
404
Last upgrade crashes network manager (no internet connection, no applet)
64744
Restarted computer during update; "the system network service is not compatible with this version"
158674
How do I get `apt-get update` to work on a machine with no internet access and manually assigned IP address?
47010
How can update-manager update without the root password?
66744
Apt "Connection failed"
66065
"Unable to connect" error with apt-get?
129101
Upgrading Ubuntu 9.04 to 9.10 when Update Manager doesn't let you
83960
How do I change my update server in Ubuntu 18.04?
133
How can I fix a 404 Error when using a PPA or updating my package lists?
142807
Can't update RVM - "fatal: Unable to find remote helper for 'http'"
110342
Getting Error on updating Kali Linux 403 Forbidden [IP: 144.217.77.182 80]
135383
Unable to update my system Ubuntu13.04: Getting message - requires installation of untrusted packages
19288
Update manager doesn't offer an upgrade to the new release