How to Fix Fix Error 0x80070499 — Windows Update Token Mismatch on Windows
Getting error 0x80070499 during Windows Update? Update token validation failed? Windows Update authentication error? Cumulative update failing with token mismatch? Update service returning authorization error? Fix this Windows Update token mismatch error.
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Main Troubleshooting Guide
How to Fix Windows Update Errors →Complete symptoms, causes, and step-by-step solutions
Symptoms
You might be experiencing this problem if you notice:
- •Windows Update fails with error 0x80070499
- •Update download starts but fails during verification
- •Multiple updates fail with same token error
- •Windows Update troubleshooter reports unfixable issue
- •CBS log shows token validation failure
- •Feature updates stuck at download phase with this error
Common Causes
- ⚠Windows Update authentication tokens expired or corrupted
- ⚠System time significantly incorrect causing token validation failure
- ⚠Windows Update agent version outdated
- ⚠SoftwareDistribution folder containing stale token data
- ⚠Proxy or firewall intercepting update authentication
- ⚠Antivirus SSL inspection breaking update certificate chain
Solutions
Solution 1: Fix System Time and Reset Update Tokens
- 1Token errors are often caused by incorrect system time:
- 2Right-click clock in taskbar → Adjust date/time
- 3Toggle ON "Set time automatically"
- 4Toggle ON "Set time zone automatically"
- 5Click "Sync now" under Additional settings
- 6If time is correct, reset update tokens:
- 7CMD as Admin:
- 8net stop wuauserv
- 9net stop cryptsvc
- 10net stop bits
- 11ren C:\Windows\SoftwareDistribution SoftwareDistribution.old
- 12ren C:\Windows\System32\catroot2 catroot2.old
- 13net start wuauserv
- 14net start cryptsvc
- 15net start bits
- 16Retry Windows Update
Solution 2: Fix Proxy and Certificate Issues
- 1Check if proxy is interfering with updates:
- 2CMD as Admin: netsh winhttp show proxy
- 3If a proxy is set and you don't need it:
- 4netsh winhttp reset proxy
- 5Check SSL/TLS settings:
- 6Internet Options → Advanced tab
- 7Ensure TLS 1.2 and TLS 1.3 are checked
- 8If antivirus has SSL inspection:
- 9Temporarily disable it or add exceptions for:
- 10*.microsoft.com
- 11*.windowsupdate.com
- 12*.update.microsoft.com
- 13Reset Windows Update certificates:
- 14certutil -setreg chain\MinRSAPubKeyBitLength 1024
- 15certutil -setreg chain\EnableCacheOnlyMode 0
- 16Restart PC and retry updates
Solution 3: Update Windows Update Agent
- 1An outdated update agent can cause token errors:
- 2Download the latest Windows Update Agent:
- 3Search: "Windows Update Agent download" on Microsoft support
- 4Or use the Update Troubleshooter:
- 5Settings → System → Troubleshoot → Other troubleshooters
- 6Run "Windows Update" troubleshooter
- 7If agent is current but still failing:
- 8Re-register update DLLs:
- 9CMD as Admin:
- 10regsvr32 /s wuaueng.dll
- 11regsvr32 /s wuaueng1.dll
- 12regsvr32 /s wucltui.dll
- 13regsvr32 /s wups.dll
- 14regsvr32 /s wups2.dll
- 15regsvr32 /s wuwebv.dll
- 16For persistent failures: in-place upgrade using Windows ISO
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