A Windows bug causes Explorer to freeze when copying Video CD contents. Inserting a VCD, opening Explorer, and copying the MPEGAV folder often leads to zero copy speed, UI glitches, and an unrecoverable Explorer process. Closing the copy window and ejecting the disc may appear normal, but new files and folders remain invisible without manual refresh, and the system cannot be restarted via Windows—only by pressing the power button. The issue first appeared with Windows 11 updates KB5023706 (2023‑03) and Windows 10 update KB5025221 (2023‑04); pristine 22H2 releases are unaffected. It can be reproduced in virtual machines, but physical discs are more reliable triggers. The bug does not occur with Windows Media Player, VCDGear, or third‑party copy tools unless they use standard Windows copy methods. Users have reported similar problems, and Microsoft has not responded to feedback submitted via the Feedback Hub. The root cause lies in VCDs not being true ISO9660 discs; Windows’ emulation of raw tracks via a .DAT gateway can cause filesystem corruption, leading to the observed copy failure and system instability.

To mitigate, avoid copying VCD data through Explorer. Use dedicated extraction software like VCDGear or Linux tools that preserve the disc’s raw structure. If the bug occurs, force a hard restart by pressing the power button; a soft restart will hang indefinitely. Reporting the issue through Microsoft’s channels may help track the problem, though no fix has been released yet.

Understanding VCDs as hybrid discs clarifies why they behave differently from standard data CDs. Their tracks contain audio, menus, and video frames that Windows’ driver attempts to emulate, creating a fragile filesystem that can break under copy operations. Using proper tools that respect the disc’s original layout prevents the Explorer freeze and restores system stability.