Turbo Tax with macOS Tahoe 26.2 not opening

You should contact TurboTax support for assistance.

Some things that can cause problems on macOS are the use of anti-virus software, cleaning/optimizer apps, and third party security software including VPNs. If any of these items are installed on your system, then uninstall them by following their developer's instructions.

You can try booting into Safe Mode to see if that allows you to run TurboTax.

You can try disabling "Limit IP address tracking" in the Network System Settings for the network connect you are currently using. This setting can sometimes cause problems with certain sites. See the following Apple article for details:

Manage iCloud Private Relay for specific websites, networks, or system settings - Apple Support

Srak4 wrote:

Click on icon in Finder "TurboTax 2025", screen pops up and says it's up to date, i click OK, and it takes me back to the Activation screen. I've already activated it and it says 1 of 5 active machines. Which is this one. I can't get to the actual turbotax software.

Like neuroanatomist, I am running TurboTax 2025 on a Mac with Tahoe 26.2 and also have no issues. I do know that TurboTax communicates extensively with Intuit's servers when TurboTax starts up to check activation and it also checks with Intuit's TurboTax servers for updates to the program and to tax forms. So anything that is regulating those connections can be interfering. The fact that you get an activation screen indicates a possibility that something installed on your Mac or even in your router is preventing those some of those connections. Also, for activation, it is important when installing to make sure it is installed for use by all users.

I can confirm the TurboTax 2025 (the downloaded app version) runs fine for me on macOS 26.2.