You can browse the old forum in a read-only mode here: https://forum-legacy.ansys.com/
The search function doesn’t work in the old forum but you can use Google instead.
When you search on Google, type this in front of your search term
site:forum.ansys.com
However, the links that Google saved are now all broken. What you have to do is copy the link address, then in a new browser tab, paste the address into the URL address bar and type -legacy after the word forum and before ansys.com you should land on the relevant page.
You are navigating away from the AIS Discovery experience