Steam client bootstrapper has stopped working

[Naksu]

So this problem began yesterday, I have tried everything possible to fix this. (10 hours of wrestling with steam at moment....) Registry cleaned few times, uninstalled steam completely two times, updated windows, cleaned computer, defragmentated both hard drives 3 times, Blob file removed, removed all but steam.exe, steamApps etc. in my steam install folder. etc. etc.

I have tried EVERY SINGLE POSSIBLE SOLUTION found on internet, no jokes, really!
I'm getting frustrated with this situtation right now.

Hovewer I got a little hope spark running SteamTmp starts updating steam but, after few seconds I get this: Steam is temporarily unavailbe, please try again.

Ps. Do not suggest me to use recommended compability settings because I don't want to run my steam in compability mode, running steam in that mode is not recommended and my Company of Heroes 2 is not starting if compability mode is enabled. At moment CoH 2 is the reason I want to get my steam fixed!

[Bad 💀 Motha]

引用自 ><FISH'>：

I am on Windows 8 and set it to Compatibility mode with Windows 7 (Windows 8 was not in the list) and "Run as Administrator". Fixed it.

Because the OS u are on/have installed won't be in that list, what sense would that make?
Seriously, think about that one for sec ;)

Steam just needs to run as admin, that is it.
Same goes for your root game .exe files.

[Mantikore]

I normally dont necrobump threads, but I had this problem and none of these solutions work. I did manage to fix it, and since this thread is the first result when you google the error message, I'll post my solution here.

Basically, I performed a disk check on the drive Steam is installed. For most of you it would be C drive.
------------------------------------------------------------------
To perform windows disk check, open My Computer, right click on C drive (or whatever drive Steam is installed) then select Properties. Go to the Tools tab, then click 'Check Now' under the 'Error Checking' part. Select both the automatic fix and attempt recovery of bad sectors.

Now if your drive is C, you cant scan it just yet, because it's already in use (by Windows), but you can schedule disk check next time you reset. So reset your PC and let it run.
--------------------------------------------------------------------
A few notes:
- This process will take a while, so do it overnight and be sure you dont need to use the computer any time soon. Some people have said it takes them days to complete. I had to scan about 690,000 files taking a total space of 1TB, taking me about 8 hours to complete.

- There will be times where it will look like it's stuck and nothings going on, staying on a certain percentage progress for an hour or so. This is ok, as long as your HDD light is on, its working on fixing the corrupt files. Give it time.

- I'm on Windows 7, but theres probably ways of doing whichever operating system youre on. Do a google search for disk check if youre on a different OS

- Im not computer savvy, and I dont know why, but people on forums recommend against interrupting the disk check (like restarting midway). So just a warning there.

- I actually found this solution with another problem I was having - I couldnt uncompress large .zip files within two locations on C drive, giving me an Input/Output (I/O) error. This error is usually due to hardware or wire connection errors, but it didnt make sense unzipping within the same hard drive.

- All credit goes to the people of the tomshardware.com forum:
http://www.tomshardware.com/forum/281637-32-device-error

[Me So Solly]

delete all steam folder n reinstall steam this prob still happening.
help me

[ВолкоBoy]

Xex

[[RGG] ICEKINGEXTREAME]

It was fine till it just randomly said that steam was offline and I am mad HELP ME PLEASE THEN YOU CAN PET MY DOG FATE

[DestructiveZombie]

i have found one reason i was messing with the programs on my RIG specifically Razer Synapses the Corsair Utility Engine and when i removed them it seemed to work well after i removed the Corsair Engine i dont think Razer Synapse was any harm, (I believe that some kind of function conflicts with Steam client Bootstrap ) but just for safety i am going keep them both off my RIG....Hope this helps someones problem!

[76561198131273872]

i have one solution. delete all files in folder steam, but don't steamapps. than you download steamsetup.exe from steam, and install it. its work for me.

[SEAFARER1670]

my problem right now is how to make my COH2 played..after i installed the update last night it automatically shot down going back to windows after get into the main menu of the game...pls pls fix.

[76561198131273872]

but, if i am restart my computer this problem reappear.

[Longhaul]

"Steam client bootstrapper has stopped working"

This problem has been happening, and ongoing for quite some time, (years).

Many people have come up with sollutions and lots of people have tried them. I have had this problem a couple of times in the since i joined Steam....

Fix 1.

Go for full reinstall.....CLEAN! (ya its a ♥♥♥♥♥ but....meh.)

Fix 2.

1. Save your steam apps folder somewhere.
2. Unstall Steam.
3. Delete Steam folder.
4. Install steam to a new directory (for ex. steam2)
5. Paste the steam app folder there.

Fix 3.

Go outside....

[Scipio]

引用自 alex.cs：

So this problem began yesterday, I have tried everything possible to fix this. (10 hours of wrestling with steam at moment....) Registry cleaned few times, uninstalled steam completely two times, updated windows, cleaned computer, defragmentated both hard drives 3 times, Blob file removed, removed all but steam.exe, steamApps etc. in my steam install folder. etc. etc.

I have tried EVERY SINGLE POSSIBLE SOLUTION found on internet, no jokes, really!
I'm getting frustrated with this situtation right now.

Hovewer I got a little hope spark running SteamTmp starts updating steam but, after few seconds I get this: Steam is temporarily unavailbe, please try again.

Ps. Do not suggest me to use recommended compability settings because I don't want to run my steam in compability mode, running steam in that mode is not recommended and my Company of Heroes 2 is not starting if compability mode is enabled. At moment CoH 2 is the reason I want to get my steam fixed!

Hey man, I just experienced the same issue myself and found a quick fix.

Browse to your base steam folder (where steam.exe is located) and delete steamui.dll.

It will rebuild/redownload the steamui.dll file and you should be all set.

This is a general error unrelated to your game, but rather a steam application error. Please pass this fix on, Valve.

[Scipio]

SOLUTION:

Browse to your base steam folder (where steam.exe is located) and delete steamui.dll.

It will rebuild/redownload the steamui.dll file and you should be all set.

This is a general error unrelated to your game, but rather a steam application error. Please pass this fix on, Valve.

Enjoy CoH 2

[76561198257607227]

maybe you can re-instal the steam... maybe it work... or maybe there are many software didn't have correspondenly with steam and steam will crash... So, I think you can re-instal the steam from begining

[AlterLife666TnT]

引用自 Floki.AF：

I had this problem too i discovered it was because i was using windows 7. Try right clicking on steam >> properties >> compatibility >> tick the box and select " windows XP service pack 2"
Let me know if this helped you.

this is it man, thanks ;-)

[grozdan, 48]

引用自 FLØKI ✝：

I had this problem too i discovered it was because i was using windows 7. Try right clicking on steam >> properties >> compatibility >> tick the box and select " windows XP service pack 2"
Let me know if this helped you.

Thanks alot man! Really helped. I had a problem when launching and actually it was downloading a new update and always said Steam Client Bootstrapper has stopped working. Make sure to put in run as administrator.