I can't play Oblivion.

[Mount ตาย south]

I'm using window 11. When I try to play it start with launcher but when I click play, the game won't start.

[cheshirm]

I'm using windows 11 since christmas. game has been working.

try steam verify game files at least?

neither steam nor the game installer nor the game make any changes to windows security.

check antivirus log? might be blocking game/game launcher.
check windows security/controlled folder access. if on add exceptions for game launcher/game.

game launcher needs to create folder
Documents\My Games\Oblivion
folder should contain files BlendSettings.ini Oblivion.ini RendererInfo.txt
and after game starts your saves folder.

if these files are missing also besides no saves
running windows one drive? one drive moves the ini files to the one drive.
tweak one drive to leave the files in the original folder.
do a web search with topic "windows one drive stop folder syncing" - many instructions on how to set it up.

mods? mods cause all kinds of issues.

might be missing some old libraries that the game needs and may have failed to install.
go to folder
...\steam\steam\apps\common\oblivion\directx
and run dxsetup.exe with admin permission

[Mount ตาย south]

Update:I open this game in the folder and it show error 0xc00007b. By the way, thank cheshirm for your help.

[cheshirm]

2007 game. maybe you are missing these:
https://www.microsoft.com/en-us/download/details.aspx?id=26999
https://www.microsoft.com/en-us/download/details.aspx?id=26368

[Mount ตาย south]

It didn't work.

[ElanaAhova]

Assuming win 11 has compatibility mode, as all previous versions of windows have - try running the exec in compatibility mod for an earlier win OS. XP and 7 are really friendly with older beth games.

[cheshirm]

if previous suggestion did not work, do a web search on
windows 11 0xc00007b
unfortunately there are lots of things to try. there is no one fix solution. some users have even reinstalled the OS and then games started working.

[Eli Scrubs]

download direct x 9 service package, windows 11 dont have that by default and oblivion doesn't auto download it

[DeathStroke]

start from the game files directly rather then steam and the launcher and it should start fine

[ElanaAhova]

Originally posted by DeathStroke:

start from the game files directly rather then steam and the launcher and it should start fine

D-Stroke is correct. Put steam in off line mode -saves a bit of PC resources. (Unless achievements matter to you.) Navigate to the game folder, and right-click the exe file. I always click using admin privileges - but prolly doesn't matter. Enjoy.