Recently there has been a lot of discussion around a new vulnerability in the way asp.net handles errors. The details are here: https://www.microsoft.com/technet/security/advisory/2416728.mspx Microsoft is still working on a patch,

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Overview Using the Microsoft Dynamics CRM 4.0 Data Migration Manager, you can convert and upload data from another customer relationship management (CRM) system to Microsoft Dynamics CRM 4.0. At PowerObjects

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