This option is not always available (e.g. if you already had created the EFS folder before, or due to desktop.ini settings, or due to file system type FAT32).

If you uncheck the checkbox when you already had created the Desktop shortcut before, the wizard will delete the existing shortcut (as long as it was not renamed or moved meanwhile).

After reverting to Microsoft EFS, the file and folder encryption will work as follows:

• You will be able to access all your encrypted data, as long as your EFS certificate and private key are usable. After EFS revert, the first access to a file encrypted with the Security Platform Solution requires your EFS certificate, private key and user authentication. Once such a file has been accessed it will be automatically re-encrypted with the new Microsoft EFS certificate.
• New files will be encrypted with Microsoft EFS included in your operating system (without Security Platform protection).

Recommendation: Decrypt existing EFS files, if you cannot ensure that your EFS certificate and private key will be usable as long as you want to access these files.

This button is only available, if you had already configured EFS before and have selected to configure it again.