I've seen three scenarios where the error 209 occurs, and not just with installing TurboTax.
- Attempting to install the program from an external hard drive or USB thumb drive has generated error 209. For some, changing the drive letter on that hard drive to "D" allowed them to install it from that external hard drive/USB thumbdrive.
- Attempting to install the program on a drive other than the default windows drive (typically drive C) has generated the error. The solution is to install it on the default drive.
- Installing the program on an SSD drive has sometimes caused this error (among others). Several "solutions" have been tried that have worked for some, not worked for others. For example, ensure the SSD drive is the default windows drive, and that the device being installed from is either that default drive, or drive "D:" if it's an external device you're installing from. Another "solution" was to disable the automatic weekly deframenting of the SSD drive. Don't see how that would matter. But it makes sense to disable defragmentation of an SSD drive, since there's really no need to defragment an SSD anyway.
