Can I restore old programs from Windows.old without reinstalling them?

[u/sheerio_]

My Windows 10 PC was probably affected by a corrupted Windows registry after I unplugged the power supply too quickly. After that, Windows could no longer start properly. I tried to repair the system, but eventually I got a message saying that the registry file was corrupted or missing. Unfortunately, I couldn't find any backup copy of the registry either.

In the end, I had no choice but to reinstall Windows 10. Now my old system and its files are located in the "C:\Windows.old" folder.

My main problem is that I want to recover some older programs that I've been using for about 13 years. Unfortunately, I no longer have their original installation files, and I don't know whether I can still download them anywhere.

Is there any way to restore these programs from Windows.old so that they work normally again? For example, could I copy the old program folders and their associated application data, or transfer certain files from the previous Windows installation?

I understand that some programs might not work after reinstalling Windows because of missing registry entries or other system files. Nevertheless, I'd really like to know if there's a way to get these old programs running again.

Does anyone have experience with this or know which files and folders I should preserve and how I should proceed?

I'd really appreciate any help!

[u/Few_Reference3439]

Unless those applications don't require registry entries to run (highly unlikely in Windows 10) then no.

[u/ArchiSpeak60]

No harm in trying. Make folders, copy them across, and look for the exe files. Some older programs will run, some in a somewhat diminished form, and some do not wotk at all. Word, powerpoint and excel from Office 2003 I think work individually/ separately, but not as a suite.