How to check the server access using WMI?

I have used WMI to get the remote server disk space report using widows service. Im getting Access Denied exception, can any one sugges开发者_如何学Pythont how to check the server access before it got exception.

I need to check the server access before getting the disk space. Please suggest.

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To get around that I have added valid network accounts under User Accounts > Manage Your Network Passwords.