I restarted a computer when Microsoft Edge was open, and when I had reopened the browser, my session was nuked with no button to restore it and no tab sets in the "Recently Closed" history. Is there any way to restore it regardless? I already backed up every Edge session-related file after the fact.
Basically the title. For material context, I am currently using an ASUS TUF Gaming A16 FA608UM with an AMD Ryzen 7 260 processor with Radeon 780M Graphics at a nominal 3.8 GHz, 32 GB of system RAM (of which 31.3 GB is usable), an NVIDIA GeForce RTX 5060 Laptop GPU with 16 GB of VRAM, the 2560 × 1600 display, and an SSD advertised as 1 TB; currently running Windows 11 Home version 25H2, build 26200.8246 on its internal drive.
I restarted the computer around 18:00 United States Eastern Time at 2026-05-19 to clear the browser session from RAM (it was getting oddly slow for its tab load {performing how it would if it had, say... 700 more tabs}, so I figured that it would be more sprightly if I restarted the session) and to prepare the computer to perform an experiment regarding the nature of OneDrive syncs related to a previous technical question.†
Honestly, while I don't remember recently voluntarily restarting a computer with Microsoft Edge open before this incident, it recovers from forcible restarts (due to updates or system crashes), app crashes, and being killed with the Task Manager almost flawlessly. And on another Windows 10 computer where Mozilla Firefox was/is my primary browser, I did frequently voluntarily restart the computer with it open, and Firefox recovered almost flawlessly from that and all those other scenarios, too. As such, I thought it would be safe to restart my computer with Microsoft Edge open.
The browser was reopened right after 01:00 United States Eastern Time at 2026-05-20. The only thing I did after that on Edge was to open the history page proper to confirm the absence of a recovery option, which may have been a mistake. (The history list was all there, BTW, just not any of the windows in "Recently Closed".) I am currently using LibreWolf (version 144.0-1, which I recognize is an old version, but ehh) instead of Edge.
Immediately after this, I used a portable install of DMDE 4.0.6 to copy over everything remotely approaching a resemblance to an Edge session file over to an external drive. The program, a data recovery utility, can preserve metadata exactly, unlike conventional Windows Explorer copies and even going beyond robocopy's capabilities. In the session files, I was able to identify a "Session_[long number]" file of ~40 MB dated to right before the restart, and a "Tabs_[long number]" file of ~350 KB dated to about a day before.
And so, the question. I really would like to recover my session (or at least a good approximation of it), considering the fact that it had a totally reasonable... I dunno, 5,000 tabs or so? Thank you.
†I temporarily paused OneDrive syncing for 2 hours and within that time created a subfolder within a OneDrive-synced folder (loading it up with boilerplate contents) to verify someone's statement that the "Date modified" of OneDrive-synced subfolders created/modified within OneDrive sync pauses is changed to when they were synced afterwards, which (unfortunately for my goals) did verify.