Core Windows ServicesLow RiskFix All Compatible

Repair Time Sync

Repair Time Sync fixes Windows clock synchronization by repairing the Windows Time service (W32Time) and forcing a fresh NTP sync. It re-registers the time service, configures the correct NTP server (time.windows.com with fallback peers), sets the service to start automatically, forces an immediate time synchronization, and corrects the UTC/local time hardware clock setting for dual-boot systems. An accurate system clock is critical — wrong time causes SSL certificate errors, 2FA token failures, Kerberos authentication failures, and file timestamp issues. Takes about 1 minute.

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Main Troubleshooting Guide

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Complete symptoms, causes, and step-by-step solutions

1 min

Estimated Time

low

Risk Level

Restart Needed

Yes

Fix All Safe

Fix This Automatically

RescuePC runs "Repair Time Sync" with one click — no technical knowledge needed.

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Common Symptoms

⚠Windows clock showing wrong time after every restart
⚠Time drifts by several minutes throughout the day
⚠"Time synchronization failed" in Settings
⚠Websites showing certificate errors due to wrong system time
⚠Two-factor authentication codes failing because clock is off
⚠Dual-boot systems always showing wrong time in Windows

How to Fix

1
Force sync: Settings > Time & language > Date & time > Sync now
2
Restart Windows Time service: services.msc > Windows Time > Restart
3
Re-register time service: Admin CMD > w32tm /unregister then w32tm /register then net start w32time
4
Force sync via CMD: w32tm /resync /force
5
Check NTP server: w32tm /query /peers — should show time.windows.com
6
If dual-booting Linux: Admin CMD > reg add "HKLM\SYSTEM\CurrentControlSet\Control\TimeZoneInformation" /v RealTimeIsUniversal /t REG_DWORD /d 1 /f
7
Or run RescuePC's Repair Time Sync which re-registers the service, forces NTP sync, and fixes dual-boot UTC issues

What This Repair Actually Runs

Extracted from repair_time_sync.ps1 — the signed script this repair executes. This is the real work it performs on your PC, not a marketing summary.

w32tm /unregister

w32tm /register

w32tm /config /manualpeerlist:"time.windows.com,0x1" /syncfromflags:manual /reliable:yes /update

w32tm /resync /force

w32tm /query /status

Windows services it manages

W32Time (Windows Time)

Every run writes a timestamped log you can review or attach to a ticket. Safety class and Fix All eligibility are enforced by the signed pack manifest (SOP-76).

Frequently Asked Questions

What does "Repair Time Sync" do?▼

Fixes time drift and W32Time service issues. It is a one-click repair in the Core Windows Services category that automates the fix so you don't need technical expertise.

Is "Repair Time Sync" safe to run?▼

Yes — this is a low-risk repair. It makes non-destructive changes and does not require a restore point.

How long does "Repair Time Sync" take?▼

Typically about 1 minute. No restart is needed.

Can I run "Repair Time Sync" automatically with Fix All?▼

Yes — this repair is included in the Fix All chain, which runs multiple safe repairs back-to-back with no interaction needed.

Do I need administrator access to run "Repair Time Sync"?▼

Yes — this repair requires administrator privileges because it modifies system-level settings. RescuePC will prompt for elevation via UAC.

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