Error 1 Error occurred in deployment step 'Add Solution': A feature with ID

Error 1 Error occurred in deployment step 'Add Solution': A feature with ID 15/0e0c279a-04de-41d2-813d-6059f2ef3fdf has already been installed in this farm.  Use the force attribute to explicitly re-install the feature.



--  deletesolution

C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN>stsadm -o deletesolution -name HNB_Circular.wsp

-- iisreset

C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN>iisreset

--addsolution

C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN>stsadm -o addsolution -filename C:\Projects\HNB_Circular.wsp

-- deploysolution

C:\Program Files\Common Files\microsoft shared\Web Server Extensions\15\BIN>stsadm -o deploysolution -name HNB_Circular.wsp -url http://spm:1111/sites/hnb -immediate -allowgacdeployment