How to Fix Exchange Database Error 501 JET_ErrLogFileCorrupt

Description: Fix Exchange Database Error 501 on Server 2016, 2013, 2010 & below versions. Get solution to resolve 501 Jet error log file corrupt with manual steps to mount Exchange Database files.

exchange error 501Introduction to Jet Error Log File Corrupt Error

Many users who try to mount data into MS Exchange database often become unable to do so due to Exchange Error 501. This error is caused by a corrupt log file and it creates an error message “JET_errLogFileCorrupt”. There are two different types of approaches available to fix the error code 501. In the upcoming section, we are going to explain a manual solution to resolve Exchange Mailbox Server error 501. However, let’s first discuss the reason for this error.

Why Exchange Error 501 Occurs?

The main reason behind this error is corruption of Microsoft Exchange log files. This error frequently arises because of data loss, damaged log files, or possibly a corruption in the header of log files. Due to this error code, Exchange Server users are not able to mount their data into MS Exchange database. To analyze exchange 2010 transaction log, you need to first understand the following two scenarios, where a user encounters the Exchange error 501 and is not able to fix the problem:

1) Due to Power outage, you’re not able to mount the Exchange 2013 Server Database and you’re getting an error related to “Dirty Shutdown”. You try to fix using the manual commands such as “eseutil/r” but you the get following message “error -501 (JET_errLogFileCorrupt.)”.

2) You’re not able to remount Exchange 2013 database and operation terminated with Exchange server error 501. You try all the manual commands such as eseutil /r, /p/ and /g but you’re still getting the Operation failed error with message: MapiExceptionDatabaseError.

Steps to check if Log File is corrupt or damaged

Due to jet error log file corrupt error, Exchange server users cannot mount data into Exchange database files. However, the corruption in the log file is the main cause of Exchange Server Error 501. Therefore, follow the following steps to check if the log file is corrupt:

  1. Firstly, open Command prompt Window on your local machine
  2. Run the Eseutil tool by typing the following command: eseutil/ml Enn
  3. If log file is damaged, the message “operation terminates with the Error 501 JET_errLogFileCorrupt” appears on the screen

Different Methods to Fix Exchange Error 501

There are two methods by which Exchange Server error 501 can be resolved. Let’s have a look:

  1. Manual Method
  2. Automatic Method

Manual Approach to Resolve Error 501 JET-errLogFileCorrupt

You can try to fix Exchange Database Error 501 manually from the backup of a corrupt log file. After backing up the corrupted log file, remove it from MS Exchange database and then restore from the backup file. Afterwards, run the eseutil.exe program to regenerate the log files.

Use the following steps to solve this issue by using manual approach:

  • Search the Backup of Log File

First of all, it is necessary to find the backup copy of log file which is corrupt or damaged. If the backup file is not in the working condition, then it should be recovered by using hard drive recovery or using a reliable third party tool.

  • Delete the Damaged Log File

When you receive the backup of the corrupted log file, at the same time you can discard that corrupt or damaged log file from the Exchange server database.

  • Repair All Deleted Log Files

After deleting the damaged log files from Microsoft Exchange, you can restore the deleted log files from a backup. When the restoring process starts, it creates the restore.env file (temporary folder). This temporary file is used to store each log file and also helps in fixing the error 501 JET_errLogFileCorrupt.

  • Run the Eseutil Command

Finally, you should run the Eseutil command for recreating the log files by typing the following script: Eseutil/cc “path of the restore.end”. This command restores the corrupt log file and will remove the temporary files.

The described workaround will help you resolve this error “501 JET-errLogFileCorrupt”.

Limitation of Manual Approach

Unfortunately, there are many limitations of the manual approach to fix MS Exchange Server error 501. Here are some of them:

  1. It is very lengthy and time-consuming procedure.
  2. Hard drive recovery through Use utility is not a simple and easy task.
  3. At times, it gets difficult to perform the entire procedure

Automatic Solution to Solve Exchange Server Error 501

To overcome all limitations of manual approach, users can use the trusted third party tool. One such solution is Exchange Log Analyzer, which helps fix the Exchange server error 501. It is designed specifically to export the scanned Exchange log file into multiple formats. It has an option to repair corrupt Exchange log files in an efficient manner. Also, it provides some unique features like date filters and it retains folder hierarchy and file naming conventions. This technical solution will help the users resolve this “error 501 JET_errLogFileCorrupt” easily.


In many cases Exchange Server users are unable to move their data due to the error code 501. Many users have tried to fix this Exchange Database Error 501_errLogFileCorrupt by using some manual workarounds. However, this manual procedure has some limitations and as discussed in the article, it often fails. To overcome this problem, users can get help from a reliable third-party tool, i.e. Exchange Log Analyzer, which saves users time and effort. This software is specially designed to fix Log files errors and it supports latest versions of Exchange server, such as 2016 and earlier versions.

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