I created a key using the sn tool to sign the assemblies in my project. I noticed that the key expired 4 months ago, but visual studio doesnt complain about this, and still signs the dlls. Will there be any impact on my customers when they install these assemblies? (If it matters some of the assemblies go to the GAC).
Strong Name keys don't expire.
You may be thinking of Code Signing certificates, which do.