Why is Visa Interactive Control unable to find or load the visa library

[Franco_20]

I am using LabVIEW 8.5.1.  I recently installed tektronix VISA driver to communicate with one of their products.  That turned out to be a bad idea.  I uninstalled it an then installed VISA460, but when I try to write a labVIEW driver which communicates through RS232 or USB, I get this error:

LabVIEW:  (Hex 0xBFFF009E) VISA or a code library required by VISA could not be located or loaded.  This is usually due to a required driver not being installed on the system.
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VISA:  (Hex 0xBFFF009E) A code library required by VISA could not be located or loaded. 

When trying to run Visa Interactive Control I get an error saying unable to find or load the visa library.  Is there something else I need to download?  Any help would be great. Thank You.

[Scott-M]

Hi Franco,

You may find the following KB useful:

Configuring NI-VISA as the Primary VISA

http://digital.ni.com/public.nsf/websearch/CC76C6A93C0F3623862574E50047E269?OpenDocument

Basically Tek and NI both place a VISA32.dll file on your computer, you may want to try deleting this file and reinstalling NI-VISA, this way the installer should create a new VISA32.dll (the NI version).

Let us know how that works out for you!

Thanks

Scott M.

[Franco_20 · Accepted solution]

I had already done that, but had no luck.  However, I was able to get it back and running by using Msiblast.  It's a great little program.  So, if anyone has problems in the future, just download Msiblast and remove everything that has VISA in it and then run the NI Visa installer.  Thanks for the help.