One of my cousins completed an MCA from IGNOU while doing a job. She shared her experience with me. I have summarised it in points for better understanding:

• The Degree Certificate of IGNOU MCA will enable you to appear for an interview 

• There are regular classes on weekends. But these classes are only on paper so you can skip them.

• Students will have to approach self-study only

• Projects are only formalities and have no real value

• Institutes that run the MCA IGNOU program offer no help when it comes to getting a job.

• There is no value of IGNOU MCA in Infosys, TCS, Wipro, etc

Apart from this various advertisements in newspapers specifically mention that IGNOU candidates will not be able to apply. So I will not recommend that you complete an MCA from IGNOU.