Bumping this. Seems now to be any game, though it only happens about half the time.

Doesn’t sound like a Steam issue, sounds like your computer is automatically deleting cookies and password sign in’s or just not saving them in the first place

Check your privacy and security settings on your PC first

Steam client can and will shutdown service if you system resource is in trouble, i read that somewhere, and no i don't remember where i read it atm.

ps.
its your job to read steam optionm and reduce steam usage resource on your PC if dont have what should i call it lack of game requirements or low end PC spec.

if you had a top ace PC then you most have othre task running that drain pc for its max game performance. ( just so you know even windows is made to avoid game lag, clearly your pc is already in trouble or you have aOC PC that actual do not work as intended bottlenecks that cause stress at system.

all this is well know issue learn from many years with PC, and you can have several tech dudues not agree on this, and this chat is pointless becuae we dont have hands on here.

i have seen PC with OC and system seem stable until you make work loads on them then thery fail bigtime. ( that is know as a bambus pc, just like a motarcycle in the past alot of power no backbone to build on stabli componet. )

What you have here we dont know.
( dont come here with BIOS and chipset drivers not update and same goes with other drivers from product support. ) we have seen alot of bad excuess here.


ps.
and i repete steam will shutdown service your pc cant handle if you dont have the resource to run it, this is fact, could look like a joke then its NOT.

We have no clue on your spec and how update that pc is.

( we mean other user that might know or read same things as i did somewhere. )

you can find past post with defrag running or other backup at system or even spottfy according to past steam user that was running same time when they play game ( this is alway a excuess for not knowing ) or install games doing play time whatever goes here.

Use windows resource manager to knwo what you pc is doing, just becuase we do that and you do not know is no excuess.

you can find 1000 of past post about it, no i haver not count them, but we have seen ppl play games on toasters also its not so is to ID with no PC spec info.

we could say ask each game support have a nice day. ( if they even care on what you are doing or run other apps, might be seen as not there problem even. )