PC NEWS: 188.8.131.52 update is out! More info here. Report bugs here
CONSOLE 1.4 NEWS: The current plan is to have Terraria: Journey's End out for Xbox and PlayStation in Q3 2021 (Jul-Sep). Switch will follow shortly afterwards. More info here. Stay up to date with console news here
MOBILE NEWS: Stay up to date with the latest mobile news here. Report mobile bugs here
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I just had the same problem. Just disable windows defender while you install it and then exclude the folder where Terraria is installed from the windows defender scan. If you don't know how to do that just google it, there are a lot of websites that explain this.
Could you maybe add...