@KJ-san
Not sure anyone here has an exact answer for you.....soem might suggest uninstalling TTX entirely, then getting a new installation file and re-installing it (might also require updating after that..but then it might start working.
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OR
Some folks using VPNs have been reporting some issues for similar problems...turn off your VPN (if you have one), and try updating after that.
OR
Some 3rd party Virus scanners with their Firewall setting set on the highest level can block the updates too
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
