msiexec /x "SEE Client_x64.msi" /l*v see_uninstall.log
Note that prior to uninstalling, the drive must be decrypted.
However, you may find that using this method results in this prompt:
Symantec Endpoint Encryption release 11.3.0 and 11.3.0 MP1.
In releases 11.3.0 and 11.3.0 MP1, Removable Media Encryption cannot be uninstalled except by a client administrator.
This is because in the Symantec Endpoint Encryption Manager policy page Removable Media Encryption - Access and Encryption, the option Do not allow users to uninstall the product is enabled by default.
Therefore, in releases 11.3.0 and 11.3.0 MP1, disable the option Do not allow users to uninstall the product before attempting to uninstall the Endpoint Encryption client. Disabling this policy option changes the Uninstall Policy key in the registry from a value of 1 to 0. If you wish to check the value of this key run the following command. For example, this shows that the key has a value of 0:
C:\>reg query "HKLM\SOFTWARE\Encryption Anywhere\Removable Storage\Client Database\CurrentPolicies" /v "Uninstall Policy"
HKEY_LOCAL_MACHINE\SOFTWARE\Encryption Anywhere\Removable Storage\Client Database\CurrentPolicies
Uninstall Policy REG_DWORD 0x0
Note that in release 11.3.1 and above, this policy option has been removed and, by default, Windows accounts with local administrator permissions can uninstall the Endpoint Encryption client.