After change in security in new version of Java there is a popup showing information about unsigned content every time site is reloaded. So we decided to sign our applets (and all libraries used). But after signing, all applets ceased to load on site, it’s just blank grey space. After deploying signed jars we got information saying “Application Blocked by Security settings”. When I click ‘OK’ applet shows information "Error. Click for details", when I click it there is no information in applet console.
What can be reason of this?
Steps to resolve in my case:
-create jar per applet
-create jnlp file per applet outside jar file
-still you need jnlp in jar file in JNLP-INF
-set properties in manifest
-then sign every lib and jar with cert