How can I fix DNS errors?

Episode 957 (45:33)

Steve from Detroit, MI

Steve is getting DNS errors and his internet connection is slowing to a crawl. Leo says it's likely a flakey cable modem. He advises taking the modem to the Comcast cable store and telling them it's broken. Ask them for a DOCSIS 3. It's fast and more reliable. Or, he can just buy a modem and avoid the monthly rental fee.

If that doesn't fix it, it could be malware. It is not unusual for malware to modify DNS. If he can't get to an antivirus page, that's often a sign of malware.