https://f95zone.to/threads/general-troubleshooting-guidelines-updated-2019-03-19.9354/That's not a thing here. Threads won't get closed because they are too old.
It's your responsibility to bump the thread in case your problem isn't solved (do not abuse it, once every week is enough).
Threads without any activity for more than one month will be moved to "Solved" even if they're not solved.