Error 17504562761 or 18417470932: Read/write protected memory
If your TurboTax 2011 update fails and you then click the What is sent in the error report? link in the Problem Reporter, you get Error 17504562761 or Error 18417470932.
In prior-year versions, the error codes are different, for example Error 17184580342 or Error 20897806248, but the one constant is that they all have 11 digits.
A system utility program (e.g., Avanquest Software's Recovery Commander or Fix-It Utilities and ImagineLAN Inc.'s ConfigSafe) is interfering with the automatic update function in TurboTax.