Get your taxes done using TurboTax

@wrandyr   This can be due to issue with your internet provider, site overload, unfinalized forms, errors in forms, security software, cache issues:

• To check for unfinalized forms in TurboTax, click the REVIEW tab in the left-hand menu to see which forms are pending or unavailable. If a form is not finalized, you must wait for the update to e-file. Note many forms are not finalized till late by the IRS or the states, then TT tech must finalize them.  There are also Forms that TT does not support (do you have any forms not supported by TT, see https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-forms/irs-forms-included-turbotax/L5...)
• Try running Turbotax as Administrator if using desktop
• CHECK INTERNET/BROWSER: Clear cache/cookies, or try a different browser.
• All TT files must be on your C: drive, not on thumb drives. 
• Check Form Errors: Go to Forms Mode in TurboTax Desktop and check for red exclamation points, which indicate incomplete information.
• RUN SMARTCHECK
• Disable Security Software: Temporarily turn off antivirus software (e.g., Norton) and VPNs, then try updating/filing again. Even if TurboTax says it is up to date, disabling security software and relaunching can sometimes trigger a necessary, overlooked update.  If you know how to just allow a program through your antivirus, you can look at programs recently blocked and just allow them through, often an issue with security software. Manual Update: Within TurboTax, go to the "Online" menu and select "Check for Updates". This should be done after you disable the antivirus, as the antivirus may be blocking the updates erroneously.
• Reinstall: If the above fails, uninstall TurboTax and reinstall it using your download from the official TurboTax account.
• If all else fails, print and file by mail.  You may be able to e-file fed, unselect state.

IF you have a California/Trust Returns (541/1041), This error frequently impacts business/trust returns. If a manual update does not work, it may require waiting for a new patch to be released by TurboTax.  You can e-file your federal, print and mail the CA return.  Note it is because CA is late in finalizing forms which then need to be updated by TT tech.