I am unable to launch/install 2024 TurboTax after downloading the program. The message is always can't connect to the internet, when my internet is fine.

[jgn]

I just bought 2024 TT Home and Business for my Windows 11 PC at the intuit website. When given the option to download, all went ok, but when I tried to launch it, it requested that I log in again. After doing this I get a message "Unable to sign you into the TurboTax Cloud. Please check your sign-in info and try again." I can sign in fine to my Intuit account. All my other URLs work fine. I called the support line and they couldn't fix it. I have no VPN, I turned my firewall off, cleared caches, uninstalled my Pop Up blocker, but nothing worked. Does anyone else have this problem or know how to fix it?

[mesquitebean]

I've seen another user say he had various problems until he made sure to have the latest Windows updates.  If you have Windows set to check and retrieve updates automatically, there could be incompletely downloaded, or corrupt, or failed Windows updates unknown to the user, or Windows updates that are downloaded but pending--not yet fully installed and lurking in the background.

Have you already talked to TurboTax Customer Support?

[Carl]

Click Start then go to Settings. Select network and Internet.

Scroll down if necessary and click on Advanced Network Settings.

Now click whatever connection is your active/connected one. It could be Eithernet or WiFi. Click the connected one.
Now click on More Adapter Options. This opens the properties menu for whatever adapter your're using.
Now uncheck the Internet Protocol Version 6 (TCP IPv6) checkbox. Then confirm the checkbox for Internet Protocol Version 4 (TCP IPv4) """IS""" checked.

Click OK to close that properties menu and you can completely close the settings menu.
It "might" be necessary to reboot the computer, but you really shouldn't need to. See if you can install it now.
If you like, weather this works or not, you can follow the above instructions again to activate TCP IPv6 again if you like.

Please let me know weather this actually works for you or not.

[jgn]

All the mountains of advice to do this/that I've gotten from TT help has been a worthless waste of time.  Even working with an agent for an hour didn't help.

I was able to track the problem down myself.  Many years ago, after getting my new laptop, I tried setting up Ethernet, but had so many problems I abandoned it and eliminated the cables and have used WiFi with no problem whatsoever for the past many years.  Unfortunately, the Ethernet adapter was still "available" in the system in the Network center.  And what does TT do?  It tries to use that adapter!  When I launch TT program to activate it, the first message I get is that I can't connect to the internet, while at the same time I'm connected to the TT web site using WiFi.  So I disabled the adapter, and everything worked fine.

This must be some sort of bug in TT, to use an unavailable internet port rather than the available WiFi.