Cannot connect wirelessly on tablet and laptop post router update

[TRice5]

Hi--  I'm not able to connect via Wi-Fi on either my Galaxy Tab 2 or my laptop.  All other devices (phones, desk top computer, XBox) connect with no problem.  The tablet and laptop were working fine 4 or 5 days ago, so I'm wondering if it has to do with the new router upgrade.  Anyway, I'm just looking for guidance on how to connect these devices.  Thanks.

[CRobGauth]

I don't have a problem with my Tab 2.

Have you tried forgetting the wifi info and redoing them?

[TRice5]

Yes, I've tried forgetting and redoing the connection.  

A little more info for what it's worth- the tablet gives me an authentication error and the laptop just says it can't connect.  Would the fact that those 2 devices are a few years old have anything to do with it? 

[TRice5 · Accepted solution]

OK, for some reason it works now.  Rebooted the router several times and forgot the network several times and it started working again.