Error using xlsread line 248

I am getting the following error:

Error using xlsread (line 248)

Error: Unspecified error

The program does not contain line 248. It has up to 191. I'm wondering if this is a general error of some type?

[Rik]

Please provide the full error and the code (and possibly other files) to reproduce it. (try to minimize the lines of code needed to trigger the error)

[Walter Roberson]

It is referring to line 248 of xlsread. The ActiveX connection to Excel is returning an error that MATLAB does not recognize.

If you happen to have any Excel plugin then try to disable them.

[Allan N]

the instruction 'xlsread' appears to use Excel and so make certain that Excel. tools, add-ins are properly configured. Doing so solved this problem, and now MatLab works beautifully!

Thanks for the hint that made us look at Excel's settings!