TurboTax FAQ
TurboTax FAQ

Errors 1406 - Cannot Write The Value To Key

Error 1406 occurs when installing or updating TurboTax:

Could not write value value to key key

This error may be followed by a 65535 error.

Possible Causes

  • You're not logged in as an administrator.
  • An anti-virus, anti-malware, firewall, desktop search or backup program is interfering with Windows Installer.
  • A registry section or file is in use or locked by the system or a running program.
  • You don't have enough free space on your hard disk(s).
  • Registry key permissions are set incorrectly.
  • The Windows Installer component is not installed correctly.



Please try each of the following potential solutions: