Why Choose Keith Thomas
• 20 years of experience as a Senior Apple Support Specialist at Apple Computer UK HQ.
• Former Apple Computer UK Mac Support Specialist and Apple Authorised Service Provider background.
• Established and Independent since 2010 for on‑site Apple Support Service – no call centres, no outsourcing, no hardware repairs. Over 25,000+ Apple problems resolved. Unique on-site Apple Support Service. backed up with Independent Apple Telephone Support Assistance.
• Trusted by home users, small businesses, and professionals across London and the South East UK.• Clear, honest, software‑only support. No Hardware Repairs. Expert Apple Consultancy Service.
On‑site Apple Mac Support in London and the South East UK
What this page covers
This guide explains the real reasons DNS stops working on a Mac, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• MacBook Air
• MacBook Pro
• iMac
• Mac mini
• Mac Studio
If your Mac connects to Wi‑Fi but websites will not load, or you see “DNS server not responding”, this page is for you.
The most common reasons Mac DNS stops working
These are the issues that Keith Thomas identifies most often during on‑site visits:
• ISP DNS server problems
• Incorrect DNS settings in macOS
• Router DNS misconfiguration
• VPN or security software conflicts
• macOS network configuration errors
• Damaged system files
• Router compatibility issues
Quick checks you can do yourself
These steps solve around 60% of DNS issues.
Check 1 – Restart the Mac
This resets the network adapter and clears temporary DNS issues.
Check 2 – Restart your router
Turn it off for 10 seconds and turn it back on.
Check 3 – Try another website
If one site fails but others load, the issue is not DNS.
Check 4 – Turn Wi‑Fi off and on
Click the Wi‑Fi icon → Turn Wi‑Fi Off → Turn Wi‑Fi On.
If your Mac shows “DNS server not responding”
This usually means:
• ISP DNS outage
• Router DNS failure
• Incorrect DNS settings
Try:
• Switching to Cloudflare DNS (1.1.1.1)
• Restarting the router
• Restarting the Mac
If your Mac loads some websites but not others
This usually means:
• Partial DNS failure
• Router caching issues
• VPN conflicts
Try:
• Turning off VPN software
• Restarting the router
• Switching DNS provider
If your Mac connects on hotspot but not home Wi‑Fi
This usually means:
• Router DNS misconfiguration
• ISP DNS outage
• Router firmware issues
Try:
• Updating router firmware
• Restarting the router
• Switching DNS provider
When DIY stops working
You should get on‑site help if:
• Websites will not load at all
• Other devices work but your Mac doesn’t
• DNS errors appear repeatedly
• macOS reinstall does not fix the issue
These issues usually require:
• Network configuration repair
• macOS recovery
• Data‑safe macOS reinstall
• Router and broadband diagnostics
On‑Site Apple Mac Support – London & South East UK
If your Mac has DNS problems, Keith Thomas provides an often same‑day on‑site support service across:
• Central London
• West, North, South and East London
• Surrey
• Berkshire
• Hampshire
• Wiltshire
Keith Thomas is a Mac Support Specialist in:
• Mac DNS and internet issues
• macOS network repair
• Data‑safe macOS recovery
• macOS reinstall and repair
• iCloud and Apple Account issues
• New Mac setup and migration
• Router and broadband diagnostics
Book on‑site help in London and the South East UK
If your Mac has DNS problems, Keith Thomas can visit your home or office and get you working again.
Keith Thomas – Apple Mac Support Specialist
Established 2010 – Open 09:30–20:30, 7 Days
Contact Keith Thomas by Telephone: 07800 940756 or by Text to: 07800 940756, or simply complete an online website contact form 24/7