Ausbildung visa to Studienkolleg visa

This is usually possible. Contact your local Ausländeramt!

Even if I get probozeit kündigung, may I still able to apply within Germany

@supriyaghimire481 Was that a statement of a question? Sorry, but it is not clear what you mean.

Yes it's a question. Because my studienkollege will be started on August and I want to change my purpose of stay. I want to study not to do ausbildung. Is that possible after having strong financial documents and conditional acceptance letter from university

@supriyaghimire481 It is still not clear to me wat your question is. (There is no question mark in your post?!?)

I assume you want to know whether it is possible to change the purpose of your stay, although you have received a student visa (with Studienkolleg and university admission and the required financial reserves)?

If so, it might be possible in some cases, in others not. This is a very complex topic with many variables - so please contact your local Ausländeramt to get a definitive answer and information about the application procedure, requirements and timelines.

My question is I was doing ausbildung and I got probozeit kündigung, I don't want to do ausbildung rather I want to study. Is that possible

@supriyaghimire481 Still no question marks. (Did you not learn English poperly?)

I checked your past posts (which I do not usually have the time to  do) and found that you already asked this before and got helpful answers, including from me. Could you please, instead of posting the same again, read those replies and post only the question(s) that are still open?