Unable to build a valid certificate chain for the signer
Are you receiving this error, "Unable to build a valid certificate chain for the signer" when you try to compile your AIR either via Flash or the AIR SDK ADT?
I'm using a Mac running OS X 10.6.4 and Firefox 3.6.8. I've been having this issue for a few weeks now while I've been trying to sign my AIR app so I can publish it to the Adobe Marketplace. I've followed the documentation from from Adobe and Thawte on how to export my Code Signing Certificate (CSC), but I still get this freaking error, "Unable to build a valid certificate chain for the signer"!
The only official documentation I could find was lacking:
- Adobe -http://www.adobe.com/devnet/air/articles/signing_air_applications_print.html
- Thawte - https://search.thawte.com/support/ssl-digital-certificates/index?page=content&id=SO6899&actp=search&viewlocale=en_US&searchid=1280805285653
After a couple of suggestions from the fine support people at Thawte didn't work, reading countless FAQs, searching forums, trying every single Google Search trick I wasn't able to find a solution. Joe Ward at Adobe pointed me in the right direction! I finally figured it out and thought I would document it here, so it you have a similar issue, hopefully this is a well documented solution for you other Adobe AIR Developers out there. See below...
RESOLVE THE CSC ERROR:
- Download & unzip thawte-roots.zip from: https://www.thawte.com/roots/index.html
- Open Firefox and go to Preferences -> Advanced tab -> Encryption -> View Certificates
- In the View Certificates window, go to Authorities and click Import...
- Browse over to your unzipped Thawte Roots folder -> Thawte Code Signing -> Code Signing CA
- Select Thawte Code Signing CA.pem and click Open
- You should get an alert window that states this is either "successfully installed" OR "already installed
- Click the OK button
- Repeat these steps to import: Thawte Roots folder -> Additional Thawte Roots -> thawte Primary Root CA -> thawte_Primary_Root_CA.pem
- Re-export your certificate
I've found that both Adobe and Thawte didn't document this error/solution very well. If you have any questions about this, please feel free to contact me and I'll help out as much as possible.
