Photoshop not compatible with Mac Os High Sierra 10.13.6

Once upon a time CC made available many previous versions of Adobe software, so one could update incrementally, to the latest version that's compatible with one's OS. No longer -- like Apple's iOS, it's the latest version or nothing. I'll stop here before I become undiplomatic, but will say that, for me (who, like the user above, is using an older system because it's stable, and upgrading would cause me to lose access to some programs), I prefer stability over the latest iteration. 

For iMac 2010/2011 users running High Sierra like me

This worked for me on an iMac mid 2010:

1. Uninstall all previous versions of Adobe CC (I mean, all software including the Creative Cloud App)
2. Download 2019 versions of the software you need from ProDesignTools (or 2020 versions. If you still have them, leave me a message)
3. Important: Disconnect from the internet!
4. Install your software, work your way up by year, beginning with 2019, then 2020, then 2021 (if you wish to test, so far only up to 2020 worked for me).
5. Connect to the internet and allow Creative Cloud to update and retrieve your licensing info.
6. Done!

High Sierra only supports 2020 or earlier version of Adobe software. However, if you engage a chat with the chat agent, they will provide you with only a handful of 2020 software, as Adobe has a policy of keeping only one or two versions back (in my case, out of 10 software, they provided me with only 3 2020 software, while the rest were 2021 or later).

Perhaps a used laptop. I just got a mid 2015 Retina Macbook Pro with a 2TB ssd (last one to allow user installed SSDs) and 16 GB ram. It's a great improvement over the mid 2012/Catalina MBP. So now if one breaks down I have a spare.

My 2012 Dell can't run Photoshop 2023 either because I can't upgrade to the Windows version in the system requirements. But $770 total for a seller to install a 2TB ssd and it has a clean screen and case.

bonsoir, je suis dans le meme cas. il ne m'a pas été informé qu'en prenant un abonnement il fallait nécessairement avoir un version récente de High sierra. Pourtant APPLE m'avait signalé qu'avec ma version je pouvais travailler avec creative cloud 2020 mais les mises à jour sont incompatibles????

Many very high end pro mac users preserve "mothball" a stable system and applications and stop updating it. 

For many professionals, computer work is all about stability and reliability - not the access to the very latest additions added to software in latest updates.

Tried and tested stable systems are worth a lot in a working environment.

To be fair, in the world of computing a 2010 machine is pretty old and has lasted well past its intended life. I think that's great. Lucky you.

I dont know Windows well, but I do know that my old HP laptop was orphaned my Microsoft years ago when it's hardware drivers (hardware drivers are a world of pain unknown to we mac users) ceased to be available for the later versions of Windows. To the best of my memory, it certainly did not remain compatible with later Windows updates for anywhere near 10 years. 

Apple support two OS versions older than the current one (Catalina), so High Sierra is still supported for security updates etc.

Until Big Sur comes out and changes everything - that will be a massive change I am told.

Even the current (some say problematic) OSX 10.15 Catalina with its "only 64 bit application support" is rather restricting to those (like me) who have older precious 32 bit software that may have been orphaned (development ceased) by developers in the rush to keep up with market needs / wants.

SO even if you COULD use Catalina you may have to replace a LOT of old apps if you did.

I run OSX High Sierra myself, but I am lucky in as much as my oldest mac is a late 2012 and is capable of running OSX 10.14 Mojave, so I CAN go that far if I wish to.

IF I do that I'll be mothballing a stable copy of High Sierra as a Virtual Machine within Parallels Desktop [a software that’s normally used to run Windows on a Mac).

It's quite straightforward.

This means I will be able to really easily switch back to High Sierra (on the same mac without rebooting) if I need support for older applications, some of which will not work with Mojave as its 32 but support is limited unlike High Sierra.

Keeping up in computer world is expensive and frustrating, and often unnecessary, I suspect your current mac has done all you've needed to do for the last 10 years and, along with that, your Adobe apps have done the same. IF it's stable and working right why not stop upgrading? 

I hope this helps

thanks
neil barstow, colourmanagement.net :: adobe forum volunteer
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>>>Is there no other solution then buying a new laptop?

Think you've covered it: Stay with your existing laptop and Photoshop version or buy a new laptop and use Photoshop 2021.