Strange bootup message

[tns1]

win7 x64
I saw something unusual during the most recent security updates including KB4499164. During login, the screen turned black and a rounded corner dialog box appeared in the upper left corner (no title bar) saying something like, "Windows Desktop Update". I don't remember ever seeing this dialog before. After a couple of seconds it went away and the PC finished booting normally. Applying the same set of updates to a few almost identically configured PCs did not show any such message, so I am left wondering if this is a windows thing vs a 3rd party SW startup message.

After some searching I found that some had reported a rare bootup dialog, "personalized settings for: Windows Desktop Update", which might be what I saw. What would trigger the appearance of this message, and is there a place where pics of all the transient windows dialogs are documented?

 

[samuria]

Perfectly normal on some updates even ie updates often have this message

 

[Paul Black]

Hi tns1,

[1] During login, the screen turned black and a rounded corner dialog box appeared in the upper left corner (no title bar) saying something like, "Windows Desktop Update". I don't remember ever seeing this dialog before. After a couple of seconds it went away and the PC finished booting normally.

[2] Applying the same set of updates to a few almost identically configured PCs did not show any such message.

[1] This is normal on some updates!

[2] It could possibly be to do with the fact that those computers are much faster and therefore the messages are only a split second!

 

[FourPuzzles1987]

VERY Normal!

Haven't been here in a while but I had to chime in:

Windows Desktop Update:

Windows Desktop Update - Wikipedia

WDU... Yep. That box pops up sometimes after updates, and sometimes, you see it and sometimes you don't. Windows 7 is built atop the corpses of older Windowses lol and that is leftover dialogs from when WDU was released, which was a way to intergrade IE 4 into Windows NT 4 and Windows 95 and gave them a webby appearance... I guess it's an artifact of windows archaeology lol... Even after IE 7 was changed that part of the code is still there...