PPPoE Error 868 — What It Means & How to Fix It

What Does This Error Mean?

Error 868 means the domain name or server address in your internet connection settings cannot be found. DNS — the system that converts website names into addresses — could not resolve the name. This is like trying to call someone using a name in the phone book, but that name is not listed.

Affected Models

Windows 7
Windows 8
Windows 10
Windows 11
VPN connections
Broadband PPPoE connections

Common Causes

The hostname or server address in your connection settings is misspelled or outdated
Your DNS servers are not responding or are pointing to wrong addresses
Your ISP's DNS servers are temporarily down
A VPN server hostname has changed and your settings have not been updated
Your network adapter's DNS settings were changed by software or malware

How to Fix It

Open your broadband or VPN connection settings. Check the server address or hostname very carefully for typos.

A single wrong letter in a server address is enough to cause Error 868.
Open Command Prompt and type: ipconfig /flushdns — then press Enter. This clears your computer's DNS cache.

A stale DNS cache can cause your computer to look up an old, invalid address.
Change your DNS server. Go to Network Settings > Adapter Properties > IPv4 > DNS. Enter 8.8.8.8 as primary and 8.8.4.4 as secondary (Google DNS).

Your ISP's DNS may be down. Google DNS is a reliable free alternative.
Restart your modem and router to force a fresh connection to your ISP's DNS servers.

Sometimes the modem itself is caching bad DNS responses. A power cycle clears them.
If this is a VPN connection, check with your VPN provider for the current server address. Providers sometimes update or change server hostnames.

Old VPN apps with outdated server lists will always get Error 868.

When to Call a Professional

If you have corrected your connection settings and flushed the DNS cache but still see Error 868, call your ISP. Ask them to verify the correct server address for your connection type. For VPN issues, contact your VPN provider or IT department.

Frequently Asked Questions

What is DNS and why does it cause Error 868?

DNS is like a phone book for the internet. When you type a website name or a VPN server address, DNS looks up the actual address. If DNS cannot find the name, your connection cannot start. Error 868 means that lookup step failed.

Will changing my DNS to Google DNS fix Error 868?

It often does, yes. If your ISP's DNS is slow or down, switching to Google DNS (8.8.8.8) or Cloudflare DNS (1.1.1.1) bypasses the problem. It is a safe change that you can easily reverse by setting DNS back to 'Obtain automatically'.

Can malware cause Error 868?

Yes. Some malware changes your DNS settings to hijack or block your connection. If Error 868 appeared suddenly with no other explanation, run a full malware scan. Malwarebytes (free version) is a good tool to start with.