Impersonation file upload impact
<p>i have a admin system, currently allow login user to upload a file,
but i found that it can not overwrite the file with same file name, it return access denied error</p>

<p>im wondering if i set impersonation = true in web.config, what impact will have?
(i know there is another way to solve my upload overwrite issue, but just want to ask the impact of impersonation)</p>

<p>Thanks</p>
