When you try to install a program using Windows Installer (.msi) Setup package, you may encounter error 2738 or 2739 and the setup fails.

Errors 2738, 2739 occur if the Windows Installer Setup uses Windows Script (.vbs or .js) custom actions, and the VBScript or JScript runtimes are not registered in the computer.

From Windows Installer Error Messages page at MSDN:

2738Could not access VBScript run time for custom action
2739Could not access JScript run time for custom action


Open an elevated Command Prompt. To do so, click Start, click All Programs, click Accessories, right-click Command Prompt, and then click Run as administrator.

Run the following commands one by one and press ENTER after each line:

regsvr32 vbscript.dll
regsvr32 jscript.dll

You should see the output DllRegisterServer in filename.dll succeeded for each command. In case you get the error 0×80004005, it’s probably because you’re trying to register the DLLs from a normal (non-elevated) Command Prompt window.

Type Exit to close the Command Prompt window.

Note: If you’re using Windows XP, you can simply run the above commands from the Start, Run dialog after logging in to an account with Administrative privileges.


Register DLLs elevated using the context menu

Email SubscriptionPrefer an E-mail subscription?

Enter your email address:

Delivered by FeedBurner


  1. dennis
    said this on Sunday, April 19th 2015 5:35 am

    thank you very much…fix works perfectly

  2. kieran
    said this on Thursday, September 18th 2014 12:30 pm

    Hi i have faced the same error code working with office 365 after lots of try lastly got the solution from this link

  3. Martin Varbanov
    said this on Monday, July 8th 2013 2:32 pm

    Thank you very much.
    I had a problem installing cryptovision interface utility, it was giving me error 2738. After following your advice, the application installed succesfully.

  4. Sally Andrukaitis
    said this on Wednesday, February 2nd 2011 10:43 am

    I carefully tried everything in this post x2 and I cannot get past the 2738 error. I run Win 7 32bit with PowerPoint 2007. For the first time ever, there was no administrative install in the context menu and “Run as administrator” under Properties was grayed out. So I chose your suggestion to run an elevated C prompt window, but that didn’t work either. Initially, I ran both regsvr cmd’s in an elevated C prompt with success, but they were “successful” just run from the “Run” line. I also rebooted along the line to clear any memory problems that might have been there.

    I am so disappointed because I will miss out on a free copy of iSpring Presenter from giveawayoftheday.com. I’ve been working for 5 hours on this problem and your solution held out the most hope. I don’t know why it didn’t work.

Leave a Reply