Server Error in '/' Application when opening Office File

Question

Hello,

I am running into an issue with an company extranet web application that we have both FBA and Windows Auth enabled on (this is only in trial right now). Internal users are able to use their AD credentials to log into the extranet and post Word documents. External customers access using a FBA login.

It was brought to my attention that when an external user logs in and tries to open up a Word file (.docx) they receive the following pop up window two times, but then the Word file opens in Word anyways:

We haven't implemented any custom error pages so I'm not sure why this all of a sudden would start appearing.

Any assistance would be greatly appreciated. 

Answer 1

There is a exception thrown and your web.config prevents the original error to the end user.

You can enable the original error message in your web.config by modifying

<customErrorsmode="Off"/>

Suppose if you don't want the user to see the original error message you try to log the errors

in a eventlog and you can trouble shoot the same.

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Kathir