TT 2025: Error 214 on startup

[user17742523190]

I downloaded and installed Desktop TT Premier 2025 on an external hard drive. I have done this before without a problem on all previous versions of TT. The install location is "E:\TurboTax\Premier 2025".

On starting up, I get the "Error 214" (Some forms are missing ... etc.). I have tried many of the corrective steps suggested in this forum, including repairing the VC++ redistributable, running as administrator, disabling virus scanning and firewalls. None of these worked.

When I try to uninstall, I get the error "The folder path 'Premier 2025' contains an invalid character". So now I can neither run it nor uninstall it. There are no invalid characters in the path and I have successfully used this method on all previous of TT in earlier years. 

Please help!!

[JohnB5677]

Lets start with the uninstal issue.

1. Shut down TurboTax and all other programs
2. Delete the Installation Folder: 
   1. Open File Explorer, 
   2. Navigate to the location where it was installed (e.g., E:\TurboTax\)
   3. Delete the Premier 2025 folder.
3. Remove the Program's Data Files:
   1. Open File Explorer.
      • Select the View menu and check Hidden items.
      • Go to C:\ProgramData\Intuit\TurboTax\ and 
      • Delete the folder associated with the 2025 version.
4. Reboot your computer.
5. Reinstall the software again after restarting. 

[user17742523190]

Thank you, @JohnB5677, @LeticiaF1 for your suggestions. I tried deleting all the items you mentioned but still kept getting the same error "Invalid characters in path 'Premier 2025'  when retrying the install. I also ran a search on the entire file system for 'Premier 2025' and deleted all the files containing that reference, but the problem persisted. Then I deleted all of the registry keys associated with Intuit products including TT, also all folders in the file system associated with Intuit. Again, I kept getting the same error on re-running the install. This thing was like a zombie in a horror movie that just keeps coming at you! I have no idea where that pathname was stored.

Finally, the only thing that worked was a complete reinstall of Windows 11, wiping all applications and settings. Actually, in my case, a "PC reset" using the factory reset feature on my HP laptop. Luckily, I had just purchased this laptop specifically to get my taxes done, so nothing was lost (except the evil TT zombie - mmwwwhahahaha). 

Following the "PC reset", I did successfully re-download and re-install TT2025, this time making sure to use only the default install location to avoid tempting fate yet again.

Thank you again for responding to my cry for help!