Unlike linux, Windows does not have a task for log rotation.
Below is a Vbs script that allows you to do this rotation.
'# source : https://docs.microsoft.com/en-us/iis/manage/provisioning-and-managing-iis/managing-iis-log-file-storage#delete-old-log-files-by-script
sLogFolder = "c:\inetpub\logs\LogFiles" 'Emplacement des logs
iMaxAge = 30 'Retention en jours
Set objFSO = CreateObject("Scripting.FileSystemObject")
set colFolder = objFSO.GetFolder(sLogFolder)
For Each colSubfolder in colFolder.SubFolders
Set objFolder = objFSO.GetFolder(colSubfolder.Path)
Set colFiles = objFolder.Files
For Each objFile in colFiles
iFileAge = now-objFile.DateCreated
if iFileAge > (iMaxAge+1) then
objFSO.deletefile objFile, True
end if
Next
Next