I am trying to make Sandbox Visual Web Part using Power Tools.
It has given me below error
Web Part Error: Unhandled exception was thrown by the sandboxed code wrapper's Execute method in the partial trust app domain: An unexpected error has occurred.
The error came when I try to add below two lines (except below two lines of code, nothing else in the web part) Any idea how to resolve it? I mean just for below two lines of code, why should one go for farm.
ExchangeService service = new ExchangeService(ExchangeVersion.Exchange2010);
service.Credentials = System.Net.CredentialCache.DefaultNetworkCredentials;
There have been similar cases with similar web part, I have developed Visual Web Part in Sandbox, it got worked fine, I deployed it, it worked for a day or so and the next day, it has started giving the same error.