Error 0x80004005 ec=-528: Dirty Shutdown Fix Guide 2025

Event ID: 474
Source: MSExchangeIS
Level: Error

The database "Mailbox Database 01" cannot be mounted because
it requires log file E0000000042.log. However, this log file
is missing or not in the expected location.

Error: 0x80004005 (ec = -528, JET_errMissingLogFile)
Database: D:\ExchangeDBs\DB01\DB01.edb

# Navigate to database directory
cd "D:\ExchangeDBs\DB01"

# Check database header
ESEUTIL /MH DB01.edb

# Look for these key indicators:
# State: Dirty Shutdown
# Log Required: E0000000042 - E0000000055 (example range)

# List log files in database log path
Get-ChildItem "D:\ExchangeDBs\DB01" -Filter "*.log" |
    Sort-Object Name |
    Select-Object Name, Length, LastWriteTime

# Check for gaps in log sequence (E00, E01, E02... should be continuous)

# Stop Exchange Information Store service
Stop-Service MSExchangeIS -Force

# Navigate to database directory
cd "D:\ExchangeDBs\DB01"

# Run soft recovery (replace E00 with your log prefix)
ESEUTIL /R E00 /L "D:\ExchangeDBs\DB01" /D "D:\ExchangeDBs\DB01"

# This replays all uncommitted transactions into the database
# Progress will show as "Scanning log files..." then "Replaying log files...""Replaying log files..."

# After completion, verify database is now clean
ESEUTIL /MH DB01.edb | Select-String "State"

# Start Exchange Information Store service
Start-Service MSExchangeIS

# Wait 30 seconds for service initialization
Start-Sleep -Seconds 30

# Mount the database
Mount-Database "Mailbox Database 01"

# Verify mount succeeded
Get-MailboxDatabase "Mailbox Database 01" |
    Format-List Name, Mounted, DatabaseSize

# 1. Verify database is clean shutdown
ESEUTIL /MH "D:\ExchangeDBs\DB01\DB01.edb" | Select-String "State"
# Expected: "State: Clean Shutdown"

# 2. Confirm database is mounted
Get-MailboxDatabase "Mailbox Database 01" |
    Select-Object Name, Mounted, Server, DatabaseSize

# 3. Test mailbox connectivity
Test-MAPIConnectivity -Database "Mailbox Database 01"

# 4. Check Event Viewer for errors
Get-EventLog -LogName Application -Source "MSExchangeIS" -Newest 20 |
    Where-Object { $_.EntryType -eq "Error" } |
    Select-Object TimeGenerated, Message

# 5. Verify users can access mailboxes
Get-Mailbox -Database "Mailbox Database 01" -ResultSize 5 |
    Test-Mailbox -Verbose

# Save as Monitor-ExchangeDiskSpace.ps1
# Schedule with Task Scheduler to run every 6 hours

$Threshold = 15 # Alert when free space drops below 15%
$Databases = Get-MailboxDatabase -Server $env:COMPUTERNAME

foreach ($DB in $Databases) {
    $LogPath = $DB.LogFolderPath.PathName
    $DBPath = Split-Path $DB.EdbFilePath.PathName

    # Check log drive
    $LogDrive = (Get-Item $LogPath).PSDrive
    $LogFreePercent = [math]::Round(($LogDrive.Free / $LogDrive.Used) * 100, 2)

    if ($LogFreePercent -lt $Threshold) {
        Send-MailMessage -To "admin@company.com" \
            -From "exchange-monitor@company.com" \
            -Subject "CRITICAL: Low Disk Space on $($LogDrive.Name) - $LogFreePercent% Free"$LogFreePercent% Free" \
            -Body "Exchange log drive $($LogDrive.Name) has only $LogFreePercent% free space. Transaction logs may be at risk."$LogFreePercent% free space. Transaction logs may be at risk." \
            -SmtpServer "smtp.company.com"
    }

    # Check database drive
    $DBDrive = (Get-Item $DBPath).PSDrive
    $DBFreePercent = [math]::Round(($DBDrive.Free / $DBDrive.Used) * 100, 2)

    if ($DBFreePercent -lt $Threshold) {
        Send-MailMessage -To "admin@company.com" \
            -From "exchange-monitor@company.com" \
            -Subject "WARNING: Low Disk Space on $($DBDrive.Name) - $DBFreePercent% Free"$DBFreePercent% Free" \
            -Body "Exchange database drive $($DBDrive.Name) has only $DBFreePercent% free space."$DBFreePercent% free space." \
            -SmtpServer "smtp.company.com"
    }
}