C:\VXIPNP\WinNT\Bin\NiViPxi.dll could not be loaded also it is enabled. Why?

[Clemens]

When I looked in MAX I reccognized a VISA warning, saying:

"viOpenDefaultRM returned 0x3FFF0077 (Unknown status value 0x3FFF0077)

This error usually occurs when a Passport either could not be found or could not be loaded. Please make sure your Passports are correctly configured by using the Passport editor, and then refresh your configuration tree. The following Passports were enabled on your system but could not be found or loaded:
C:\VXIPNP\WinNT\Bin\NiViPxi.dll could not be loaded

Possible reasons for this warning:
1. A Passport was either renamed or deleted.
2. A Passport depends on other components in your system that are no longer present.
3. Your installation of VISA is co
rrupt, i.e. an internal registry key is missing or changed.
4. An older installation of VISA may have caused this warning without specifying more information. Try refreshing the configuration tree to get more information."

When I searched for the file, I found it, where it should be. Refreshing the tree does not help. What do I have to do to solve this problem?

[Dan_Mondrik]

What version of NI-VISA do you have? If it's older than 3.0, I'll suggest upgrading - the latest is 3.1.

This problem is usually caused by other NI libraries upon which that Passport depends. Older versions of those libraries had problems loading in certain cases, and many of those cases have since been fixed.

Dan Mondrik
National Instruments