On Mon, 25 Nov 2019 19:53:35 +0000
Baron <baron@...> wrote:

> Does anybody know if the "RAR" format has changed ?

Not to my knowledge, but it's a proprietary format, therefore subject to change without notice.

> For some reason I am no longer able to extract some rar archives that 
> have been sent to me.

Could the files be corrupt?

Could the files be password-protected?

In the worst case, you can always download a trial version of the officially-blessed
extraction program from rarlab.com .  If it can't open the files, you'll know there's
something wrong with them.

E. Liddell