Thank you for visiting Apple Support Communities.
Here is an article that you may find helpful with this issue.
DNS issues - "Server Could Not Be Found", webpages load slowly
DNS-related alert messages
It's possible to successfully connect to the Internet but not be able to load webpages or do other things that use the Internet. You may see messages such as:
- "The server could not be found."
- "The specified server could not be found."
- "A connection failure has occurred."
- "Connection attempt failed."
- "Name servers not responding."
Delay before connection
In some cases, webpages might load, but you have to wait quite a bit before they do. This could be caused by DNS issues.
The domain name system (DNS) server, which is provided by your Internet service provider or network administrator, translates names like "www.apple.com" to their numerical IP addresses. For more information, see these articles: