After change the drive letter from X: to Z: the icon BoxCryptor persist on the old file share icon (X:). This drive letter X: is used bye a Windows File Share and the boxcryptor icon persist.
BoxCryptor is full fonctionnal on the drive Z:, just the icon BoxCryptor that persist on the old mount drive (X:).
This is a cosmetic problem but i search a solution to revert to the default Windows file share icon.
After uninstall and reinstall the version "Boxcryptor_v2.2.403.216_Setup.msi", the problem persist.
OS : Windows 10 Entreprise Build 10240 FRENCH x64
Thank you for the support.