I'm seeking recommendations for gratis software that will run on Windows that can copy strings from any window, especially from error message windows / message boxes.
In particular, the app must be able to copy strings from windows in which normal copy/paste functionality is not present (such as most error message windows... ugh).
Cross-platform recommendations are most welcome, but at the least, the app must run on Windows 7.
Historically, I've used NirSoft's SysExporter, but unlike all the other wonderful NirSoft apps, I don't find this particular app to work in many situations.
Portable apps (no installer, and no writing to the Windows registry) are strongly preferred, but that is not a hard requirement.
The app must not include any forced telemetry or other required forms of internet access.