"reply on this thread" vs "reply to this thread"

[Daemon99]

Can someone please tell me which of the following sentences is correct?

1) You are requested not to post any reply on this thread.
2) You are requested not to post any reply to this thread.
_________________
Non-native speaker of English
=================================
I intend to live forever - so far, so good.

[Alan]

Hi Daemon,

You would usually say 'reply to' when there is a question or invitation or letter mentioned as in: Reply to a letter/Reply to an invitation. With something like 'thread', which is less specific I would say:

You are requested not to post any further replies concerning this thread.

Alan
_________________
English as a Second Language
You can read my ESL story Everything in the Garden is lovely