"... will be changing the Password History settings by the end of this month. With this change, you will not be able to set your password to any of your 24 previously-used passwords."
Seriously? 24? WTAF?
I had a client once who, once a month, forced a password change with a 15 password reuse limit. So once a month I logged in, set my password to 'Insecure01' thence 'Insecure02' onward to 'Insecure15' and then back to my good password which I never knew because yay password safe.
I sent them the link to the paper done by (I think) the NCSC showing that password rotation was harmful. The response was basically "thanks, but we're going to ignore it".