The cause is yet to be definitively unearthed and confirmed, but a growing number of users of Windows 10 and Windows 11 users are complaining about a strange visual issue. Upon launching, unlocking or restarting their computers, affected users say that a blank, white window appears in the corner of their desktop. In some instances, it disappears after a short while, but for others it remains visible continually. There are theories about what could be going on. As noted by Windows Report, the fac