Win10, Right click on pinned programs in Start Menu no longer have file list

I see you also have a newer update KB5055612 that I don't have. The description doesn't say anything about jumplists though.

It's interesting that KB5055518 appears to be the cause of the problem. Wildbilly's original post (which started this thread) was on April 7. The first few responses on the thread also occurred on April 7. KB5055518 wasn't released until April 8.

I didn't notice the issue on my computer until April 8 when it installed all three of the updates mentioned in your post. I usually check for updates manually on the second Tuesday of the month, but this month the computer was already downloading and installing updates by the time that I went to check.

You can also do the same thing using the Win 10 installer: https://www.microsoft.com/en-us/software-download/windows10

Whichever seems easier to you.

Once the installer has finished, go to Settings =>Advanced Windows Update Options and block updates for as long as possible. With luck, this will get fixed within that period.

Well, good news!
On one of the computers that had the jumplist issue, I just restored a backup from January 2025. After finishing, I DON'T click "Check for Updates" and let Windows automatically search for and install pending updates. Normally, it only checks for updates once a day when the computer first boots up. I repeat: DO NOT click "Check for Updates" either before or after. Let Windows do everything automatically.

PD:

I then restored the January 2025 backup again, clicked the "Check for Updates" button, and it didn't fail. This proves it's not the button, but a March update.

I'll add a curious note. I have a habit, on the second Tuesday of every month, of manually clicking the "Check for Updates" button on the computers I use every day. If they're computers that are usually turned off, I click the button when I turn them on to do other things. On all of these computers, the jumplists have failed when I click the button.

However, on three other computers that are usually turned off and I never clicked the "Check for Updates" button, but instead updated themselves automatically, the jumplists haven't failed.

I'll try to run a test on one of the computers where I restored the backup and blocked updates with gpedit.msc. I'll remove the update block and NOT click the "Check for Updates" button, but rather let it do its thing, reviewing the update history to see what happens. I imagine it can update the same day or the next day, always after a system restart. You can see the time of the last check in Windows Update, so it's probably the next day because I think it only checks once a day.