Why do I get the error "Server Creation Failed: "Class not Registered" ?

I am creating a COM server (using actxserver) for CSTStudio using MATLAB, but i m getting an error related to Class not regiestred in feval which is working inside actxserver. Also when i tried to create COM server for other applications such as Word and Powerpoint it is working fine but showing error for invoke function.

Here is the Code:----

addpath(genpath('G:\MATLAB\CST-MATLAB-API-master'));

cst = actxserver('CSTStudio.application');

mws = cst.invoke('NewMWS');

This is the error:---

>> MicrostripAntenna

Error using feval

Server Creation Failed: Class not registered

Error in actxserver (line 89)

h=feval(['COM.' convertedProgID], 'server', machinename, interface);

Error in MicrostripAntenna (line 32)

cst = actxserver('CSTStudio.application');

[Begginer201]

Hello @Nishtha Shrivastava,

Try to use cst = actxserver('CSTStudio.application.2021'); if you have the 2021 version installed

Answer 1

[Shuba Nandini]

Hello,

I understand you are encountering an error when trying to create a COM server for CSTStudio using “actxserver” function. Here are some troubleshooting steps you can follow to resolve this issue:

• Ensure that the bitness (32-bit or 64-bit) of MATLAB matches the bitness of the CST Studio installation. If the bitness between MATLAB and CSTStudio is different, please get a version of MATLAB or CSTStudio that matches the bitness of the other.
• Make sure that CSTStudio is correctly installed on your computer. If it’s correctly installed, try using the version number of the CSTStudio you have installed in “actxserver” function.

cst = actxserver('CSTStudio.application.<version number>'); 

I hope this helps you to resolve the issue!

Regards,

Shuba Nandini