Firefox 40 does not allow the extension even after signing

Question

I am Using Firefox 40 and followed Signing an XPI article to sign an XPI. Used certutil to sign the XPI, imported the X509.cacert in firefox Certificate Manager (Authorities tab) every step completed as mentioned in the article. Now if I install the XPI , I get popup.

Caution: This site would like to install an unverified add-on in Firefox

After installation the extension is working correctly.

However if I set the flag: xpinstall.signature.required to true and then try to install it . I get popup telling

This add-on could not be installed as it appears to be corrupt.

Followed the steps in the article multiple times just to make sure I din't miss anything ..but still the same issue. Would appreciate any pointers to where to look for the problem.

Answer 1

Extensions now have to be signed by mozilla unless you're using nightly/dev edition or a special unbranded release/beta builds.

See this page for further information.

If you want to distribute them yourself AMO should have an option to submit extensions for signing without listing them.