Epson Updater problem under Sequoia

You could try uninstalling & reinstalling the Epson drivers/utilities. But be cautious, check the Epson Support website for your printer/scanner model(s) to see if the current drivers/utilities are qualified for Sequoia.

My software updater is fine, and there was no update that needed to be applied.

My computer says the printer is there, but it also says it doesn't get a response.

My printer says it can see my computer.

I have exactly the same problem with Apple Watch not unlocking my mac after the 15.0 upgrade.

Doing those recommended steps didn't work either.

But both these problems--watch and printer--happen with EVERY MacOS upgrade. I complain, as do others, and find no one else can figure out the problem. But then (weeks later) things start to mysterious work again (and others have said the same).

Apple, being the young startup that it is, will eventually smooth out these kinks.

same here. tried everything

By far the easiest way to cause poor performance, instability, overheating and crashing is to install ANY third-party speeder-uppers, Cleaners, Optimizers, or Virus scanners, Bit Torrent, or a VPN that you installed yourself. 

are you running any of those?

I have a questions? The AirPrint does not let you refine the colors as the Printer driver normally would let you. But when you go into the Epson website under the Mac OS 15, there are no Printer Driver only the airprint and scan print. How do we get the Printer Driver Utilities Combo like all the prior Mac OS have 14x and below? The work I do requires me to adjust the colors in the advanced color tab that is on everything below Mac OS 15x, but the package is not there on the Epson Website. How do we get that added? Do we have to downgrade from Sequioa, if so how do we do this? I cannot use me printer. When I try to use anything below Mac OS 15x it I get communication errors or it will just not print.

What is the exact model # of your printer?

Epson driver support is specific to each printer model and it usually takes some time after a new macOS release for Epson to update drivers. Sequoia has only been out for about 3 weeks.

For the MacOS 15 drivers go to > https://epson.com/Support/Printers/All-In-Ones/ET-Series/Epson-ET-8500/s/SPT_C11CJ20201?review-filter=macOS+15.x

Also see macOS 15 Support at > https://epson.com/Support/wa00957

What model is your Epson printer..?

If the Epson printer supports AirPrint, then you do not need any Epson software or drivers.

see > About AirPrint - Apple Support

Are you using AltTab utility? If so, this is the one creating the problem. Quit AltTab and try again! ;-)

Epson ET 8500, I have others too.

Epson ET 15000

Epson ET 2480