security token service not available

In health analyzer there is a warning "security token service not available". I had tried a lot of options:

- Checked if security service pool is running

- Reprovisioned all services

- Provisioned Service Host Config

- Checked service pool account, it have all necessary permissions

- Replaced sts web.config

Read most popular topics about this problem:

http://blogs.technet.com/b/sykhad-msft/archive/2012/02/25/sharepoint-2010-nailing-the-error-quot-the-security-token-service-is-unavailable-quot.aspx

http://sharepoint.stackexchange.com/questions/82601/the-security-token-service-is-unavailable

Still no success. When i try to browse http://localhost:32843/SecurityTokenServiceApplication/securitytoken.svc i receive http 500, in iis trace log i see

ErrorDescription="Could not find "SharePoint14Module""
ModuleName="IIS Web Core", Notification="BEGIN_REQUEST", HttpStatus="500", HttpReason="Internal Server Error", HttpSubStatus="0", ErrorCode="File not found.
 (0x80070002)", ConfigExceptionInfo=""
Because of this problem i can't run user profile sync service and metadata service, in uls i always receive next error:
Claims Authentication - An exception occurred when trying to issue security token: The server did not provide a meaningful reply; this might be caused by a contract mismatch, a premature session shutdown or an internal server error
By the way users have no problems with login to sharepoint portal.
any help appreciated