A couple days ago I was playing around with some Event Notifications and the Certificate that I’d created for them on my development machine. Low and behold I’d made a classic mistake and forgotten to write down the password for the certificate. Thus I was left without a critical component necessary for signing my procedures. Since this really wouldn’t do, I opted to drop the certificate from the server.
Now this shouldn’t be such a problem a siimple DROP CERTIFICATE statement and I should be good to go. The statement I used look just like this:
IF EXISTS(SELECT * FROM sys.certificates WHERE name = ‘MyCertificate’) DROP CERTIFICATE [MyCertificate] GO
Yup, Didn’t Work
There wouldn’t be much of a point to this if this worked as intended. So here’s the rub, the statement ended up generating the following error:
Msg 15352, Level 16, State 1, Line 1
The certificate cannot be dropped because one or more entities are either signed or encrypted using it.
Backing up a bit, the reason that I created this certificate is that I’ve been using it to sign stored procedures. I was doing that so that the procedure can execute under that a login that has the permissions I want rather that just opening a big security hole in my development machine.
What’s Signed By Your Certificate
SELECT OBJECT_SCHEMA_NAME(co.major_id) + '.' + OBJECT_NAME(co.major_id) FROM sys.certificates c INNER JOIN sys.crypt_properties co ON c.thumbprint = co.thumbprint WHERE co.crypt_type_desc = 'SIGNATURE BY CERTIFICATE' AND c.name = 'MyCertificate'
Hopefully, you won’t forget your certificate password like I did. But you may need to remove a certificate from one of your systems some time and hopefully this get you passed that irritating error above.