Turbo Tax will not perform updates, what is the problem. I have had this problem since I purchased this software which is the same I have used every year.

Windows or Mac?  Where is it getting stuck or any error message?  Is it for state?

See if these 2 support articles help

https://ttlc.intuit.com/community/tax-topics/help/there-is-an-update-available-for-your-version-of-turbotax-loop-when-e-filing-windows/01/1116299

And can't install state, state looping

https://ttlc.intuit.com/community/tax-topics/help/state-loop-indicates-turbotax-is-up-to-date-after-updating-but-won-t-allow-you-to-install-your-state/00/1127787