In theory, this script performs everything possible to fix Windows time synchronization errors. Make sure to run this script as administrator.

fix_windows_time_sync.ps1

Write-Host "--- DIAGNOSTICS START ---"

Write-Host "Checking Group Policy Overrides..."
if (Test-Path "HKLM:\SOFTWARE\Policies\Microsoft\W32Time") {
    Write-Host "WARNING: Group Policy for Time Service detected!"
    Get-ItemProperty -Path "HKLM:\SOFTWARE\Policies\Microsoft\W32Time\*" | Select-Object *
} else {
    Write-Host "No Group Policy found."
}

Write-Host "Checking Current Registry Parameters..."
Get-ItemProperty -Path "HKLM:\SYSTEM\CurrentControlSet\Services\W32Time\Parameters" | Select-Object NtpServer, Type

Write-Host "Checking Recent Event Logs..."
Get-WinEvent -FilterHashtable @{LogName='System'; ProviderName='Microsoft-Windows-Time-Service'} -MaxEvents 5 -ErrorAction SilentlyContinue | Format-Table TimeCreated, Id, Message -Wrap

Write-Host "--- ATTEMPTING FIX ---"

Write-Host "Stopping Service..."
Stop-Service W32Time

Write-Host "Removing Group Policy (if exists)..."
if (Test-Path "HKLM:\SOFTWARE\Policies\Microsoft\W32Time") {
    Remove-Item -Path "HKLM:\SOFTWARE\Policies\Microsoft\W32Time" -Recurse -Force
    Write-Host "Group Policy removed."
}

Write-Host "Unregistering..."
w32tm /unregister
Start-Sleep -Seconds 3

Write-Host "Registering..."
w32tm /register
Start-Sleep -Seconds 3

Write-Host "Starting Service..."
Start-Service W32Time
Start-Sleep -Seconds 3

Write-Host "Configuring 'time.windows.com'..."
w32tm /config /manualpeerlist:"time.windows.com,0x9" /syncfromflags:manual /reliable:YES /update

Write-Host "Waiting 5 seconds..."
Start-Sleep -Seconds 5

Write-Host "Triggering Resync..."
w32tm /resync
Start-Sleep -Seconds 2

Write-Host "--- FINAL STATUS ---"
w32tm /query /peers
w32tm /query /status