Virgin Media says it has overcome a national broadband outage which affected thousands of customers.
The problem was caused when set-top boxes and modems in customer homes were remotely updated, which led to customers losing their IP address, which is necessary for them to connect to the internet.
Problems started this Monday and went on into the week, said Virgin Media.
Some customers were left without a connection for just a few minutes, while others were down for hours.
The customers worst affected were those located in northern England.
Updated set-top boxes and modems automatically tried to renew customer IP addresses, but Virgin Media network routers, which handle such requests, were unable to cope, reports the BBC.