Have you made any changes to Java in the past few days? If you are not using the splash screen plugin (including it in build.settings), the activation or not has nothing to do with your successful builds. If you can’t build sample apps on your PC and you can on a Mac, then it pretty much rules out issues. The error you are seeing is consistent with a Java related issue. Perhaps you’ve applied a Windows 10 update (or maybe it auto updated) or there was a change in your Java JDK.
This is why I suggested we move this to the other thread. There is plenty of discussion there on things to try (updating your Java to the latest version, converting your existing keystore to a modern format, etc.)
After renewing my splash screen plugin today, the splash screen plugin is no longer working. Had same issue last year and magically disappeared, but again an issue. Native Builds, Corona-3350.