It still seems to work for me on Windows 10 21H2 19044.1766. But I have a nondefault Windows configuration. I thought I had written this up in another bug but I can't find it, here's the background: This feature was originally intended to restart and restore a session across an unattended restart (usually for a Windows update). At about the same time, Windows 10 got a feature where it would *always* use the restart manager to save and restartable apps, even across a normal shutdown/restart. This was linked to the setting to restart such apps *prior to login*, which caused some issues. This was enabled by default, I think in 1709 (Fall Creators Update), you can see when people started noticing it in [this thread](https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/apps-reopening-on-start-up-after-shutdownrestart/b6d6b6b1-dc08-4ecd-aad7-088eb7cb723e). I wrote up some finer build-by-build details in bug 1464146 comment 1. A few years later the "Automatically save my restartable apps when I sign out..." setting was split off, and it was also turned *off* by default. This was rolled out in [insider build 18965](https://blogs.windows.com/windows-insider/2019/08/21/announcing-windows-10-insider-preview-build-18965/), I think it was released with 20H1 (mentioned [here](https://docs.microsoft.com/en-us/windows-insider/archive/new-in-20h1#control-over-restarting-apps-at-sign-in-build-18965)). So I think the feature is still working, but it now needs to be opted into in Windows 10 settings. It ought to still work by default for unattended restarts, which can be simulated with `shutdown /g`. No idea what the situation might be on Windows 11. --- Side note, while I'm writing: This is supposed to be able to recover a session even if "Open previous windows and tabs" isn't set. When I tested it just now, it doesn't seem to work reliably, I find that more recently opened tabs don't get restored, or are restored empty. Relevant tests might have been disabled in bug 1751259.
Bug 1778562 Comment 1 Edit History
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It still seems to work for me on Windows 10 21H2 19044.1766. But I have a nondefault Windows configuration. I thought I had written this up in another bug but I can't find it, here's the background: This feature was originally intended to restart and restore a session across an unattended restart (usually for a Windows update). At about the same time, Windows 10 got a feature where it would *always* use the restart manager to save and restart apps, even across a normal shutdown/restart. This was linked to the setting to restart such apps *prior to login*, which caused some issues. This was enabled by default, I think in 1709 (Fall Creators Update), you can see when people started noticing it in [this thread](https://answers.microsoft.com/en-us/windows/forum/windows_10-other_settings/apps-reopening-on-start-up-after-shutdownrestart/b6d6b6b1-dc08-4ecd-aad7-088eb7cb723e). I wrote up some finer build-by-build details in bug 1464146 comment 1. A few years later the "Automatically save my restartable apps when I sign out..." setting was split off, and it was also turned *off* by default. This was rolled out in [insider build 18965](https://blogs.windows.com/windows-insider/2019/08/21/announcing-windows-10-insider-preview-build-18965/), I think it was released with 20H1 (mentioned [here](https://docs.microsoft.com/en-us/windows-insider/archive/new-in-20h1#control-over-restarting-apps-at-sign-in-build-18965)). So I think the feature is still working, but it now needs to be opted into in Windows 10 settings. It ought to still work by default for unattended restarts, which can be simulated with `shutdown /g`. No idea what the situation might be on Windows 11. --- Side note, while I'm writing: This is supposed to be able to recover a session even if "Open previous windows and tabs" isn't set. When I tested it just now, it doesn't seem to work reliably, I find that more recently opened tabs don't get restored, or are restored empty. Relevant tests might have been disabled in bug 1751259.