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User credentials in SI Config file is not working when using windows authentication even after ve

Title

User credentials in SI Config file is not working when using windows authentication even after ve

Description

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When using the qSIListView web part you may get the following error when navigating to the list.

“The following error occurred. An error occured while calling Web service: Failed to build dynamic web services proxy assembly”, when using the qSIListView web part.

When looking at the SI Config file you verify that the user information is correct, however it fails to authenticate and keeps displaying the credentials window to enter a valid user account.

 

Cause

When Windows authentication is not working in the SI config test it may be due to a Loopback issue when trying to authenticate to an IIS server locally. This is a known issue by Microsoft whereby if you are trying to authenticate to IIS locally, your account may run in an endless loop and never authenticate properly unless you disable Loopback on the server.

Resolution

The workaround for this is to disable Loopback on the SharePoint Web Front End Server where the Quest Web Parts configuration is installed. Instructions are as follows:

Click Start, click Run, type regedit, and then click OK
In Registry Editor, locate the following registry key: HKEY_LOCAL_MACHINESYSTEMCurrentControlSetControlLsa
Right-click Lsa, point to New, and then click DWORD Value. (In Win 2008, its DWORD 32bit)
Type DisableLoopbackCheck, and then press ENTER.
Right-click DisableLoopbackCheck, and then click Modify.
In the Value data box, type 1 and then click OK.
Quit Registry Editor.
You may need to restart your server.

Defect ID

When Windows authentication is not working in the SI config test it may be due to a Loopback issue when trying to authenticate to an IIS server locally. This is a known issue by Microsoft whereby if you are trying to authenticate to IIS locally, your account may run in an endless loop and never authenticate properly unless you disable Loopback on the server.

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