Depending on exactly how you performed the installation, there have been a couple of Cumulative Updates, Net Framework Updates, and Flash Updates. All of them require a restart. I'm using Windows 10 Pro here and if I open the Start-Settings-Windows Updates page, then look to the "Active Hours" section. If your Active Hours are minimal, then the restart can happen before you'd like. Also, click on the "Advanced Options" link, there is a setting that says: "Restart this computer as soon as possible when a restart is required for an update....." I have this option turned OFF. Do you have it turned ON? If so, then the quick restart will happen whenever windows chooses it to be so.
Hope this helps.
Grif
Updated on May 25, no problems worth mention. On 5/29 while I was surfing the net, my desktop PC rebooted all by itself. Just a few minutes ago, 6/03, again while 'surfing', it happened again. Ran Windows troubleshooter but no luck.
Poblem signature
Problem Event Name: BlueScreen
Code: d1
Parameter 1: 8
Parameter 2: 2
Parameter 3: 0
Parameter 4: fffff80576f27168
OS version: 10_0_18362
Service Pack: 0_0
Product: 768_1
OS Version: 10.0.18362.2.0.0.768.101
Locale ID: 1033
After initial "May" update had both the sfc /scannow and the chkdsk /f /r /x = no issues.
Thanks in advance for any suggestions.

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