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 a Mac cannot login to the App Store, the steps you can try yourself, and when it’s time to get professional on‑site help. It applies to:
• macOS App Store
• Apple Account sign‑in
• App downloads and updates
• In‑app purchases
• iCloud and Apple Account services
If your Mac refuses to sign in to the App Store, keeps asking for your password, shows “Verification Failed”, or won’t download apps, this page is for you.
The most common reasons a Mac cannot login to the App Store
These are the issues that Keith Thomas identifies most often during on‑site visits:
• Incorrect Apple Account password
• Two‑factor authentication issues
• Apple Account security blocks
• macOS App Store corruption
• Network restrictions
• macOS update issues
• Damaged Apple Account configuration
• Corrupted user account
Quick checks you can do yourself
These steps solve around 60% of App Store login issues.
Check 1 – Restart the Mac
A restart resets App Store and Apple Account services.
Check 2 – Check your Apple Account password
Most login failures happen after password changes.
Check 3 – Approve login alerts
Apple often requires approval on another trusted device.
Check 4 – Update macOS
App Store and Apple Account fixes are often included in macOS updates.
If you see “Verification Failed”
This usually means:
• Incorrect password
• Apple Account security block
• Network issue
Try:
• Re‑entering your password
• Approving the login on your iPhone or iPad
• Restarting the Mac
If the App Store keeps asking for your password
This usually means:
• Keychain conflict
• Authentication token expired
• Damaged App Store configuration
Try:
• Removing old Apple Account passwords from Keychain
• Restarting the Mac
• Signing out and back into your Apple Account
If the App Store won’t download or update apps
This usually means:
• App Store corruption
• Network restrictions
• Apple Account permissions issue
Try:
• Restarting the Mac
• Turning Wi‑Fi off and on
• Updating macOS
If App Store login works on iPhone but not on Mac
This usually means:
• macOS Apple Account configuration issue
• Keychain corruption
• Damaged user account
Try:
• Signing out and back into your Apple Account
• Restarting the Mac
• Updating macOS
If App Store login issues started after a macOS update
This usually means:
• App Store services reset
• Keychain reset
• Apple Account re‑authentication required
Try:
• Re‑entering your Apple Account password
• Restarting the Mac
• Updating all apps
If App Store login works on another user account
This usually means:
• Corrupted user account
• Damaged App Store preferences
• Permissions issues
Try:
• Testing App Store login on another user account
• Restarting the Mac
• Reinstalling macOS without erasing data
When DIY stops working
You should get on‑site help if:
• Your Mac refuses to login to the App Store at all
• App downloads fail repeatedly
• macOS reinstall does not fix the issue
• App Store crashes or freezes
• You need your data preserved
These issues usually require:
• Apple Account and App Store configuration repair
• macOS recovery
• Data‑safe macOS reinstall
• User account repair
• Permissions and system file diagnostics
On‑Site Apple Mac Support – London & South East UK
If your Mac cannot login to the App Store, 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:
• Apple Account and App Store login issues
• iCloud Drive and Photos syncing
• macOS configuration repair
• Data‑safe macOS recovery
• macOS reinstall and repair
• New Mac setup and migration
• User account and permissions diagnostics
Book on‑site help in London and the South East UK
If your Mac cannot login to the App Store, 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