Well, if they can't help...not sure anyone here can help you beyond that..
BUT
1) You cannot start it by clicking on a tax file...neither double-clicking on a .taxyyyy datafile, nor by rt-clicking and using "Open" from the pop-up screen. You have to run the TTX program first.
2) Un-install entirely and re-install. BUT, make absolutely sure you are NOT using a Compatibility Mode installation for the software. (OK maybe compatibility for Windows 7 would be OK, but not for Win XP or lower)
or
3) Forcefully uninstall and re-install...again, do NOT use compatibility mode. A forceful Uninstall may remove files for both "Business" and the other Personal edition....but it doesn't remove your existing datafiles :
<a rel="nofollow" target="_blank" href="
https://ttlc.intuit.com/questions/1901054-forcefully-uninstall-and-reinstall-turbotax">https://ttlc....>
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But if you TTX "Business" software and your TTX Personal (Deluxe, or Premier or H&B), neither of them work, then that may indicate some disk/system corruption you'll need to deal with, either troubleshooting yourself some at a local Computer store.
That's all I got.
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
