Make sure that you are at the latest release of the 2022 TurboTax software for Windows.
Click on Help at the top of the desktop program screen. Click on About TurboTax. Click on the Version tab.
The latest release is 022.000.0934
If you have the latest release, then try this procedure to amend the return.
Click on Federal Taxes (Personal using Home & Business)
Click on Other Tax Situations
Under Other Tax Forms
On Amend a return, click on the start button
If you still get the message that the amended return is not yet available. Then try running the software as an Administrator if not currently.
Save your tax return and close the TurboTax program
Right click on the TurboTax icon
Click on Properties
Click on the Compatibility tab
Check the box to Run this program as an administrator
Click on Apply and OK
Start the program again and see if you can now access the amended return. If not. then close the program and re-start your computer.
After re-start and starting TurboTax again, can you now amend the 2022 tax return?
