Steam client won't open after Verifying Installation

[qq]

I just double click to run the .exe it shows the loading cursor icon twice, then the verifying installation notification appears for 1-3 seconds, it then disappears and nothing happens. Steam is on the process list on Task Manager. I've tried ending the process and restarting. Nothing happens. I've also tried restarting my PC. The issue may be to do with updating the client.

[qq]

Originally posted by Mr_Oren:

Try to run Steam as administrator.

Make sure no programs interfere with Steam, and try to disable the AntiVirus while updating / launching Steam.

Click Start, search "cmd", open as adminstrator, and type in: netsh winsock reset"

If nothing helps, try reinstalling Steam safely without losing your games:

Go into your Steam Directory (default is C:\Program Files unless otherwise specified during the installation), press Ctrl + A at the same time, press Ctrl + LeftMouseButton on the following folder and file: "steamapps" (The folder which contains all your games, software within the Steam Client) and "Steam.exe", the client executable itself.

After installing Steam, it may appear as if you don't have any games installed, select to download the games you had installed and during the Memory Allocation, the message will turn into "Detecting existing files..." and you'll be able to play.

Well, nothing worked unfortunately.

[BigBlackWalrus]

I HAVE THE EXACT SAME PROBLEM. I tried to reinstall steam without losing my games. It works fine without my games if i launched it but when i try to exit steam to move my /steamapps folder with my games in it, it won't open again. I'm not sure why but I did everything i can find in the forums/reddit/youtube except reinstalling OS and redownloading my games tho, and none of them worked. My last resort would be to redownload my games but as much as possible i don't want to because it's a pain to DL almost 200gb with a slow internet. Would appreciate an update if you have found a fix for this. Thanks!

[Nondescript]

same problem, I would I also appreciate an update

[qq]

Problem still hasn't been solved for me

[Cathulhu]

Read the FAQ about the problem: Games do not run after 'Preparing to Launch' (Link)

[Shirohige]

wut???

[Italian Spiderman]

Gonna post a "me too" for visibility.

[qq]

Guys I used the resintall executable in the steam folder incdluing all games. Steam now works for
Me

[Vic]

I got it working!

First I tried reinstalling, run as admin, uninstall, reinstall again, disabled AV, nothing worked.

Then I tried 'netsh winsock reset' in CMD (as admin), restarted PC, steam updated on startup (again) and now it opens the login screen, I'm in.

Btw, I moved my steamapps folder before uninstalling steam just in case it removed them.

[Nondescript]

Originally posted by Vic:

I got it working!

First I tried reinstalling, run as admin, uninstall, reinstall again, disabled AV, nothing worked.

Then I tried 'netsh winsock reset' in CMD (as admin), restarted PC, steam updated on startup (again) and now it opens the login screen, I'm in.

Btw, I moved my steamapps folder before uninstalling steam just in case it removed them.

Didn't work for me unfortunately, may not work for everyone, but worth a shot

[shade00]

there is an chance some who are facing problems are due to it being an client - steam servers problem.
since it all happened at once for the lot.

[umblikal]

Are you sure steam stays at taskman? In my case it disappear after 1 or 2 minutes. Steamerrorreporter shows then it also disappears.

[shade00]

Originally posted by umblikal:

Are you sure steam stays at taskman? In my case it disappear after 1 or 2 minutes. Steamerrorreporter shows then it also disappears.

my guess would be that it appears in there task manager for the period of it trying to connect to servers.
then itll come up to 1 of 2 screens when fails,
1 will tell you it could not connect.
2 will tell you it could not connect yet will allow offline mode.
both of which will hang as popup till closed.

also well trying to connect the steam window may be hidden yet still active.

[umblikal]

It is not a connection issue. Processmon reports steam querying resident application information then with buffer overflow errors it crashes. It seems like a vat or drm issue with new client...

But the interesting thing is if your library is empty it runs without any error. When you add games library again it will give buffer overflow errors again crashing the client.

So most likely new client has some bug with some games security files. While it is checking installed games the bug triggers. Files accesed by steam will create overflow errors causing the client to crash. I was not able to track which files steam accessing before the crash. But someone with enough knowledge may be able to.

[shade00]

Originally posted by umblikal:

It is not a connection issue. Processmon reports steam querying resident application information then with buffer overflow errors it crashes. It seems like a vat or drm issue with new client...

try telling that to valve, i contacted them after the update before this one as defult login method kept failing.
i asked repeatly if there was an chance it was server issuie or something on there side.
no reply each time even when was few people in support.
they kept saying it was my computer, or my connection most likely.
about an week passed, switched to tcp mode thanks to a friend finding an video.
now even thats acting up.

point being theyll point fingers sadly at your computer 1st before they even think its the client or there servers.
not saying they wont try to help, but i do wish theyd look into there end when someone asks if it could be on there end and not avoid the question.

but all in all i hope they figure out what the problems are since ive read some being 6 months unable to login.
which is scary since games arent cheap.
myself sadly im seeing tcp mode give login problems now also taking various retrys to login.

so hopefully your right, and sorry for the rabbleing on as bit tired.