I have been using V2.5 for several months now without problem but today I tried to access the Admin Panel as usual and was presented with a CDbException page saying failed to open the DB connection.
I set debug mode to 1 in config and now get a more detailed error page, some of which can be seen in the attached.
It is saying that my password has expired and I much change it using a client that supports expired passwords?
I can access the MYSQL database just fine using an external database client so not sure what is going on.
Any help greatly appreciated as I have a survey running right now and not sure if people can still access the survey.

Thanks,
Paul

I found the problem - it seems that passwords generated in later versions of MySQL have a time limit of approx 360 days. To reset the password follow the instructions in this StackOverflow post:
stackoverflow.com/questions/33387879/mys...expired-cant-connect

Really interesting : stackoverflow.com/a/41552022/2239406

Resetting the password will only solve the problem temporarily. From MySQL 5.7.4 to 5.7.10 (to encourage better security - see MySQL: Password Expiration Policy) the default default_password_lifetime variable value is 360 (1 year-ish). For those versions, if you make no changes to this variable (or to individual user accounts) all passwords expire after 360 days.