I'm running Windows 11 Home (fully patched). Firefox recently updated to the above-mentioned version. Since then, I've "lost" all my bookmarks and cannot load any backup version from the "Old Firefox Data" folder (which has several bookmark backup files). My security software is Windows Security.. The IMPORT/EXPORT function in the Bookmarks Manager reports no backups nor any bookmarks at all. The same IMPORT/EXPORT function won't allow me to maneuver/select any of the bookmark backup files for importation. Last, I cannot find any instructions on how to manually restore my bookmarks. I live in a rural area and the power has gone out twice in the last 10 days. While I have my PC connected to a UPS with line purification, the power was out for hours draining the UPS battery. Both times I was not home to do a controlled shutdown. This bookmark error happened after the first power outage, but I was able to restore form an old backup. This time, however, I'm unable to restore. I'd appreciate any assistance in this matter.