After allowing the latest TurboTax update to install, any TurboTax file I save gives Error TT400. Is the latest update defective?

[am683]

A friend called and asked for help with TurboTax 2017 as he was getting error TT400 trying to save a file.  He checked and all his TurboTax 2017 files gave the same error.  I opened my TurboTax 2017 and it wanted to install an update which I let it do.  Now I cannot save any of my TurboTax 2017 files either.  It sounds like this latest update is defective.

[TXG]

Exact same thing happened to me - hours WASTED!!

[s-watts]

This is happening to me (Win 10).  I tried saving to different locations and as different users.  I installed it on another laptop (Win 7) and get the same error.

[AM13]

This is also happening to me (Windows 7). Worked great until I took the latest update today. Now unable to save any files. Just wasted 2 hours of my life

[strife777]

having the same problem after the update installed

[lsmclennan]

I am having the same issue after today's update

[s-watts]

I installed TT on Win 10, Win 8 & Win 7.  On Win 8 I installed from the DVD and didn't do updates.  Same error.  It even errors after creating a new return.  I am a Network Admin and install software for a living.  I have wasted half a day on this.  Never had these issues and I've used this product in various forms for years.  Frustrating.

[send2me43]

I have the same issue. It does not even allow creating a new file.

[momo22]

Same thing, after install TT update can not save any of my returns, even after changing to diff locations. Very frustrating

[s-watts]

I spoke to Customer Support.  They say reinstalling fixing it.  However, I have done that, and have installed on 3 different systems with different operating systems and no joy.  They have opened a case with their software developers and have given me 5-7 days for a patch.