Yes.
But you need to change the battery first.
If you change to Offline... nope... all games will work.
PS. Owned games... PS+ games needs internet because the console needs to check the subscription.
So it really is just like when PSN goes down (back in PS3 days and early PS4 days mostly) and some games don't work on the PS4? Unticking connect to the internet is the workaround.
I think PS+ games show a date of when your PS+ ends, so they might be able to be played until that time.
We need more testing!
I honestly don't think this will really affect many if at all, especially any time soon but I am interested in this from a purely technical perspective.
Is there easy workarounds? What is affected? Why? Are saves linked to accounts or can you transfer them from one account to another? Trophies and shit won't matter, because we're talking "end of days" for the servers of each console.
Not true. Your windows 10 license key is stored in ACPI tables and is wiped if the battery dies. Guess what you need to do to access windows again? Authentication online.
Isn't it stored in the registry? Does the CMOS battery affect a lot? I've only used it to reset BIOS passwords before