Run following command through Shell
stsadm -o provisionservice -action stop -servicetype spwebservice
stsadm -o provisionservice -action start -servicetype spwebservice
Note: this has to run from the server where you intend to host the web application
And then IISRESET / NOFORCE
This may take long time to execute this command depending on number of web applications.
stsadm -o provisionservice -action stop -servicetype spwebservice
stsadm -o provisionservice -action start -servicetype spwebservice
Note: this has to run from the server where you intend to host the web application
And then IISRESET / NOFORCE
This may take long time to execute this command depending on number of web applications.