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Follow the steps below to successfully use NextCloud Sync.

1.Open WebDav Authoring Rules and then select Disable WebDAV option present on the right bar.
2.Select Modules, find the WebDAV Module and remove it.
3.Select HandlerMapping, find the WebDAVHandler and remove it.
4.Restart IIS.

Windows iis information is really too little. I almost gave up on this.

I modified the WebDAV rules and now it can connect.

but it show other error: Not Found.

Does webdav need to set anything?

I'm already restart the iis.

but still have this question.

Is there any other setting?

phpinfoI'm already set the radio button to "All Verbs",but still have this error.

here is my phpinfo.