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"RegUtilities cleaned up my PC with a couple of simple steps. The process is SUPER easy and the results couldn't be better. Now my PC starts right up and doesn't show those annoying messages anymore. You have a life-long customer RegUtilities thanks."

Gina T.
Fort Dodge, IA

System Requirements:

Runs on Microsoft Windows 7, Windows Vista, Windows XP and 2000. Including 32-bit & 64-bit versions. Download size: 3.4 MB

Software Description:

RegUtilities will run a scan of your PC and identify all system errors , missing or corrupt system files. It also identifies errors in ActiveX/COM objects, Windows startups, File associations, File path references, Shared DLLs. To fix these errors, you can purchase a one year registration of RegUtilities software for only $29.95 subscription including all new versions, unlimited smart updates and customer support.

*Free trial is limited to startup customization, registry scanning, backup registry ,defragmenter tool , restore already backed up registry file. To access software full functionality is $29.95 USD subscription including all new versions, unlimited smart updates and customer support for 1 year.

ISScript.msi Error: Fixing a Problem that Takes Away Your Control


Anyone who receives an ISScript.msi error knows it right away. When this occurs, it is impossible to install or uninstall any programs putting your computer into a virtual stalemate.


What is an ISScript.msi Error?

A .msi extension is one that is exclusive to the Microsoft installer program known as InstallShield that is on your computer. Therefore when you are receiving an ISScript.msi error it is a certain error with your InstallShield explaining why you won’t be able to install or uninstall any programs. The actual error is one with the script engine of your InstallShield, which is evident by the extension name itself. The telltale sign of this problem is a pop up error message stating there is a script engine that is missing.


What Causes an ISScript.msi Error?

An ISScript.msi error can occur for a couple of different reasons. The file itself may have accidentally been deleted in which case it will be missing in action. Another cause could be that the file is old and outdated or just corrupted resulting in the same status.


How to Fix an ISScript.msi Error

As there are a couple of different scenarios for the cause of the ISScript.msi error you are receiving, there will likewise be a couple of different solutions. Your actual solution will depend on your actual cause, but simply try each solution and see which one works for you.


Solution 1: Restore Deleted File


  1. Double click the Recycling Bin icon on your desktop.
  2. View all the files that are contained in the folder.
  3. If you see ISScript.msi, then highlight it.
  4. Click Restore.
  5. Restart your computer to allow changes to take effect.
  6. Attempt to install or uninstall a program and see if problem persists.


Solution 2: Install the ISScript.msi Script Engine


  1. Verify the script engine you should be using.
    1. Right click the file you want to install.
    2. Click Properties.
    3. In the Properties window click the Version tab.
    4. Notate the File Version number.
  2. Go to
  3. Select appropriate script engine according to what you notated for download.
  4. Click Open when prompted.
  5. When you see a ZIP folder, double click it to initiate the download.
  6. Follow instructions that are given.
  7. Click Finish when prompted at the end of the installation.
  8. Restart your computer.
  9. Attempt to install or uninstall and see if problem persists.


This will hopefully fix your ISScript.msi error problems and allow you to once again control the programs on your computer. Good luck!

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