I don't have any direct feedback to your question, but I remember reading that the end of support was around November of this year. Unless both dates are true for different things. ???

A curious situation. Are you certain your software isn't Win 11 compatible? The biggest difference I see between W 10 and W 11 (I use PCs that have both) is changes to the user interface and other new gizmos that are of no use to me and I ignore/hide them.

I've been a happy Open Shell user for many years and through Microsoft's pointless user interface changes from version to version, Open Shell keeps what I see and use consistent and offers different retro appearance choices.

I looked up the support extension you mentioned - it's called ESU, for Extended Security Updates. $61 for the first year, $122 for the second, another doubling for the third and that's it.

If you have truly incompatible software and replacements/updates for them are unavailable, I think your money is better spent buying a new PC rather than extending support on the old one. Take the old PC offline when W10 support ends this October. The new one would be safe to face the world over the internet.

Good luck.

My computer is capable of running W11 and it has been downloaded, just not installed, yet. It’s my Quicken 2017 that I’m most concerned about. I’ve read that there are problems with the ini file trying to do an install of this software on a W11 computer but that’s not what I’m trying to do here.

I have found this comment in my search but I’d like something more assuring:

“The upgrade from Win 10 to Win 11, IMHO should not cause any change to the Quicken.ini file so I would think your QW2017 would continue to function but I do not know that for sure. If I were in your shoes I probably would not do the upgrade to Win 11 until such time that there is some important need to upgrade to Win 11.”

A couple of years ago Microsoft described a way to switch back to W10 if you weren’t pleased with W11. I’m not sure that option remains.

I didn't allow my computer to update to Win 10 to avoid the potential slow-down of a "bigger" OS, and other reasons.

Mom's computer did update. It became noticeably slower. She doesn't use it, anyway. I do when I'm there to check & archive her email (gmail, via Thunderbird, which I also check but don't archive on my computer). I took over monitoring her fianaces after dad died two years ago. Set it up on Microsoft Money which I've been using for 27 years (yes, my data goes back to 1/1/1997). MS Money is long discontinued but the Sunset Edition was offered free in 2010 and may still be available at some sources (archive.org). I was leery that it wouldn't install on Win 10, but it did. I copy her data over there so I can show her details if/when she wants to look.

Something you could do if you want to go to the effort and cost, is get one of those hard drive cloning devices and a new hard drive, clone your drive, update the clone to Win 11 (or the original if you want to keep the new clone intact) and see what happens with Quicken. You can put the new clone or the old original, whichever isn't Win 11, back into running on your system if a problem is apparent with Quicken & Win 11.

edit to add: I found some info in my archives about a few registry tweaks to insure Money Sunset works on Win 10. I'm not 100 sure if I did those tweaks or if it worked without them.

You apparently are aware of some similar tweaks for Quicken and Win 11, that apparently may not be needed, as you say.

" No longer supported doesn't mean it instantly becomes non-functional. I'm still running Win 7 ... which went out-of-support five years ago, but still receives...... Avast antivirus.......Malwarebytes ........ Firefox updated... Thunderbird......

Do you know the difference between Windows updates and program updates? You're describing program updates, typically to change or improve functionality. Operating system updates, which you haven't received for years, are most importantly security related, to patch vulnerability problems that bad guys have found and exploited.

It's needlessly risky to use such a PC on the internet. Your choice, your consequences.

" It’s my Quicken 2017..... "

I'm a long time Quicken user and I wouldn't go back to an old version if I were paid to do so.

One thing I wonder - does Quicken 2017 still function to download your financial account transactions over the internet? That capability is probably the one I most appreciate, it's a big time saver and error preventer.

The subscription version, currently the only type offered, has several tiers but is less than $100 per year. That much money won't buy one hour of tax return prep time, or one hour of financial analysis, or even one hour of free time for you.

If it's a budget-driven decision, that's different. No need to respond but I think you're missing out.

This in a post from Windows:

“And for the first time ever, we’re introducing an ESU program for personal use as well. The ESU program for consumers will be a one-year option available for $30. Program enrollment will be available closer to the end of support in 2025.”

A higher rate was cited for business users.

Personally, I wouldn't do it for any cost. Again, unless the decision is driven by budgetary reasons.

There's also the possibility of hardware failure risk, and I'm thinking mostly of hard drives which are known to fizzle unexpectedly. I have a home server that serves several functions, including as the primary (though not the only) location for backing up important files from PCs in the home. Quicken, other financial records, tax return data and copies of filed returns, and other things too others.

It's been getting sluggish and I checked -it's nearly 10 years old, way overdue for retirement. It's foolish to persist with old hardware because components die unexpectedly, and if important files aren't backed up weekly, major disaster looms.

I bought a new Lenovo mini, with a very modest price compared to what many pay for PCs, and I'm solidly now in the 21st century. What a difference, very much worth the money and a few hours of pain spent transferring everything over.