How to Fix or Reset the NI Measurement and Automation Explorer Database File

Updated Nov 21, 2019

Reported In


  • Measurement & Automation Explorer (MAX)


  • NI-DAQmx
  • NI-488.2

Issue Details

  • DAQmx has slowed down either after updating or reinstalling. How can I potentially fix this issue? 
  • When I open NI Measurement & Automation Explorer (MAX), I get the following error message:
The database file is corrupt. Refer to KnowledgeBase article 4GA9TOQA for information about how to fix or restore the database file.
  • NI MAX is throwing the error message:
The MAX database exited abnormally. Visit and enter the info code MAXTerminatedServiceError if the problem persists. Go to now?
  • When exporting the NI MAX Configuration Database, I get:
Error -229771: Internal Software Error occurred in MIG software.
  • NI MAX takes too much time to open, usually over 5 minutes, and when I select My System I see a message that displays:
There was a problem updating settings for this device
  • The software is not able to read my computer's settings, such as the hard drive space available.
  • I cannot run the GPIB Analyzer. It says that the application was unable to start correctly.
  • NI-MAX is behaving strangely or showing devices that are not connected to my computer.


Note: Use caution, as this procedure will delete all configuration data stored in MAX including DAQmx Tasks, DAQmx Global Virtual Channels, custom scales, and device configuration.

If you want to back up your DAQmx Tasks, DAQmx Channels, custom scales or devices, refer to Export/Import (Save) the System Configuration in Measurement & Automation Explorer (MAX) before resetting your MAX Database.

If the Export Wizard is hanging or you can't access it, an alternative for exporting the configurations can be found in Recovering the NI-MAX Configuration Without Using the Export Options, please be cautious when doing this and use it only when the Export Wizard is not working properly.

Also, if you have any issues exporting your scales you can see the information on Why Can't I Export My Custom Scales in the MAX Export Configuration Wizard? to find another way to export them.
Note: You can check your version of NI MAX by going to Help » About.

For NI-MAX version 5.0 and newer

Starting in version 5.0, there is a new reset configuration data utility available from within MAX. This utility allows you to automatically restore the MAX database back to default. If you have MAX version 5.0 or later installed, use this option by completing the following steps.

Steps to use the reset configuration data utility in MAX:
  1. From within MAX, select Tools»Reset Configuration Data.

  1. Make sure to save any unsaved progress from any open programs. When prompted with the following dialog box, select Yes to restart your computer.

  1. After your system restarts, the MAX database will be set to default. 

For earlier versions of MAX

For versions previous to MAX 5.0, you can run the MAX Database Corruption Removal Tool, which is designed to automate the process of removing database corruption.  To use this tool, log into an account with Administrator privileges and run the downloaded executable. 
Note: If any errors occur while running the tool, go through the steps on Manually Resetting the MAX Database to make sure the process was completed. If you are unable to complete the following steps using normal system settings, please reboot your computer in Windows Safe Mode and attempt to complete the steps once again.

Additional Information

  • Resetting the MAX database will delete all the scales, tasks and configurations of recognized devices on the Measurement and Automation Explorer itself, it will not impact the hardware in any way. 
  • MAX maintains a backup copy of the database file, which can be used to restore the database to a known state. Resetting MAX configuration data will remove the database file and replace it with the default. This tool can be helpful in rare cases of database corruption. It can also be helpful in cases where the database is not corrupted but has entered a strange state. In those cases, resetting the database may be beneficial in returning the system to normal operation.
  • If you are unable to open MAX to reset the configuration data, then the data can be reset outside of MAX by using the ResetNIConfig Tool as described in How Can I Reset the MAX Database Without Opening NI MAX?
  • MAX Database corruptions are rare but may be caused when a system reboots without being properly shut down due to a power loss or a system crash. If this problem occurs after installing a newer version of MAX, verify that you have already performed a reboot of your PC before attempting to reset the database.


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