adding virtual directory under Dnn Website

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IIS

dotnet-nuke

Hello all

I want to create virtual directory in my DNN website and make new database for this site , for this I go to IIs manager and click add virtual directory and browse that site it shows error

Module IIS Web Core Notification BeginRequest

Handler Not yet determined

Error Code 0x800700b7

Config Error Cannot add duplicate collection entry of type 'add' with unique key attribute 'name' set to 'LogoffHandler*'

Config File \?\C:\Website\dnndev.me\web.config

Requested URL http://www.dnndev.me:80/VirtualDnn Physical Path C:\Website\dnndev.me Logon Method Not yet determined

Logon User Not yet determined Config Source 116:

Please tell me how can I resolve this problem.


Thanks