Renaming generates a copy

I am using a Windows client application. If I try to rename or save before synchronization, a copy is generated.
Before I know it, a large number of copies appear.
What is the best way to prevent this?

hey @mh8710masaya and welcome to the communityforum of nextcloud.

I’m afraid your inquiry is missing really ALL valid and important information. We even don’t know for sure if you’re using nc-app or another one.

So please let us know more about your setup, serverenvironment and all the problematic softwares including their versionnumbers