My friend's visa was rejected, so now I need to change my file and find out the reason. It is said that it needs to be transferred from Canadian immigration.

It is very common for Canada to be refused a visa, and it will not affect your subsequent visa application. Find out the reasons for refusing the visa, that is, unreasonable study plan, immigration tendency and insufficient funds. There seems to be one more item recently, such as the purpose of going abroad. If you know where the first visa refusal occurred, you can supplement the materials and continue to submit the visa. If you need to change gears, the intermediary company has the strength to help you, just for a week.