Academic Company Events Community Support Solutions Products & Services Contact NI MyNI
26 rating:
 1.76 out of 5   

How Do I Correct the 'Another Installer is Already Running' Error Message?

Primary Software:
Primary Software Version: 6.1
Primary Software Fixed Version: N/A
Secondary Software: N/A

I am trying to uninstall LabVIEW, or any other National Instruments product that uses the Microsoft Installer, but every time I run the uninstaller, I get an error message telling me that Another installer is already running. I am not installing any other applications. How do I get rid of this message so that I can run my uninstaller?

It is possible that a previous installation on your computer has become corrupted. If this happens, it will not complete execution properly, and may continue to run in the background, even after a restart. The Microsoft Windows Installer does not allow multiple products to install simultaneously, so if one product appears to be installing, you will not be able to install others.

One way to break out of the loop is to reinstall the Microsoft Installer. Reinstalling the installer should cause any current installations to terminate. Follow the links below for the version of your operating system and download the Windows Installer. Running the installer may generate an error, but it usually kills the corrupted process. After running the installer, reboot the machine and attempt your installation. If you still receive installer errors, you may want to run the Program Install and Uninstall Troubleshooter, which can be found on Microsoft's support pages, linked below.

Related Links:
Windows Installer Redistributable for Windows 7 and later
Windows Installer Redistributable for Windows 2000 and XP
Windows Installer Redistributable for Windows 2000 and Windows NT 4.0
External Link: Fix Problems that Programs Cannot be Installed or Uninstalled


Report Date: 11/20/2002
Last Updated: 04/22/2014
Document ID: 2RJ945FP

Your Feedback! poor Poor  |  Excellent excellent   Yes No
 Document Quality? 
 Answered Your Question? 
  1 2 3 4 5
Please Contact NI for all product and support inquiries.submit