Strange error 403: Acces Forbidden in Sharepoint 2013 IIS

Question

For the first time, I' m facing an unusual error when I 'm trying to access to a site collection in SharePoint 2013, just created. Error 403 + access denied concerning ISAPI module?

I retrieve the error in the IIS log -> Warning:

-MODULE_SET_RESPONSE_ERROR_STATUS 
ModuleName   IsapiModule 
Notification  128 
HttpStatus 403 
HttpReason FORBIDDEN 
HttpSubStatus 0 
ErrorCode 0 
ConfigExceptionInfo
Notification EXECUTE_REQUEST_HANDLER 
ErrorCode L’opération a réussi. (0x0)

Infrormations:

All site collections in the Web app have the issue. I check the rights on directories, it's okay.

Authentification : Anonymous Authentification    Enabled
                      ASP.Net Impersonation         Enabled
                      Basic Authentification        Disabled
                      Digest Authentification       Disabled
                      Forms  Authentification       Enabled
                      Windows Authentification      Enabled

Is it a problem into IIS?

Into Handler mapping /_vti_bin/owssvr.dll have acces SCRIPT

Thanks for your help, Christophe.

everything seems correct on the side of access rights to files, and authorization by the side of CGI scripts

I incline rather to conflict linked to a previous installation of Office Microsoft Office Live Add-in 1.3? or a missing dll? the side ASP. NET?

Have you an idea of it?

More informations about my configuration on IIS:

1) ISAPI and CGI restrictions Allowed for all dll paths

2) Handler mapping Permissions : read , script and execute for feature OwssvrHandler

C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15\isapi\owssvr.dll

3) Permissions acces "all rights" for everybody on foldes C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\15

and C:\inetpub\wwwroot\wss\VirtualDirectories\80

Is this a problem due to the fact that Sharepoint 2010 has already been installed on the machine?

Best regards

I'm worried you delved right into the IIS logs. What do the SharePoint ULS logs say? Does the request even get passed to SP? Try expanding your web application to a fresh one with a different URL. Any errors in the event log? — Dennis G

mouhcine mouhcine · Accepted Answer · 2014-02-23T13:40:11

try to allow all on iis/ISAPI and CGI (to avoid message access denied concerning ISAPI module) enter image description here

Strange error 403: Acces Forbidden in Sharepoint 2013 IIS

2 Answers