The first error had an Error ID of 2214 and a description of:

“Could not load all ISAPI filters for site ‘DEFAULT WEB SITE’.  Therefore site startup aborted.”

The second error had an Error ID of 2268 and a description of:

“The HTTP Filter DLL C:\Program Files\Microsoft\Exchange Server\ClientAccess\owa\auth\owaauth.dll failed to load.  The data is the error.”

I have resolv this error by copying the C:\Program Files\Microsoft\Exchange Server\Bin\extrace.dll to c:\windows\system32\

Why Exchange OWA can’t find the file in orginal place i can’t answher? But now OWA is working again