“An unexpected error has occurred” : Debugging Sharepoint

Debugging SharePoint can be problematic at times, it does like to hide debugging information from you. Recently I got an error: “An unexpected error has occurred” with nothing written to log files, trace or the event log.

The solution is to change a single entry in web.config, by modifying the line…

<SafeMode MaxControls=“200“ CallStack=“false“…

to…

<SafeMode MaxControls=“200“ CallStack=“true“…

You will also need to set custom errors to ‘Off’ .

<customErrors mode=“Off“/>

You will no longer see the “An unexpected error has occurred” error page and instead you get a lovely ’standard ASP.Net error page’ with the stack trace and everything…development has got that little bit easier!!

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