Was that a work computer? I know on a work laptop I did have some time restrictions set by IT because they had some authentication policies, but my understanding is that on a Windows Home account you control there should be no time limit, although it may complain about your MS apps or treat it as a not-activated install after a while, I'm not sure. I admit that I have never put that to the test on a Win 11 PC. I definitely did on MS-account enabled Win 10, since I've stashed older PCs and then turned them back on offline later, but I don't think I've had an idle Win11 machine more than three months yet.