Windows & Office Error Code Lookup
Search by error code (like 0x80070005), stop code name (like IRQL_NOT_LESS_OR_EQUAL), Excel formula error (like #REF!), or plain description.
Don't have an exact code yet? See common Windows error messages explained in plain English first.
7 results
0X80072EFD — A Connection with the Server Could Not Be Established
A general connectivity failure reaching a Microsoft service — usually your network, a firewall, or a proxy/VPN blocking the connection.
0X80070424 — A Required Service Cannot Be Started
A Windows service the current task depends on (often related to Windows Update, Security Center, or networking) isn't running.
0X80072EE7 — Store/Update Connection Timed Out
A connection to Microsoft's servers timed out — usually a network stability issue or DNS problem.
DNS-PROBE-FINISHED-NXDOMAIN — DNS_PROBE_FINISHED_NXDOMAIN
The browser couldn't resolve a website's address at all — the DNS lookup found nothing, which usually points to your DNS settings or the site being genuinely down.
ERR-CONNECTION-TIMED-OUT — ERR_CONNECTION_TIMED_OUT
Your browser sent a request but got no response in time — could be the site, your firewall, or your connection.
0X800704CF — The Network Location Cannot Be Reached
Windows can't reach a specific network resource — commonly a mapped drive or shared folder that's offline or misconfigured.
0X80070645 — Network-Related Access Denied
A permissions issue when accessing a network share or resource — the account doesn't have the rights the target expects, or Windows is specifically blocking a type of access it now treats as insecure by default.