I am experiencing significant certificate generation issues in Windows 8.

The first issue I encoutered was with Hyper-V being unable to generate a certificate. See this question for more detail: Hyper-V not working on Windows 8.

Since then, I've tried to deploy a self-signed application through click-once. When clicking Create Test Certificate I receive this message:

Access is denied. Exception from HRESULT: 0x80070005 (E_ACCESSDENIED)

After I receive that error, I can manually choose the certificate that was generated by selecting Select from File.... Then, when I try to install the deployed application, I receive this error:

Cannot continue. The application is improperly formatted. 
Contact the application vendor for assistance.

I am running VS as an administrator. Am at a total loss on how where to go next. Any suggestions?

1 Answer 1


I guess you don't have read access.

Right click on the file, and ensure that you have read access. Or, give that right to Everyone just to quickly test and then by user.

Some times, the key lives here C:\Users\All Users\Microsoft\Crypto\RSA which also needs to be updated.

  • Are you saying the file is generated without issue and I can't read it? Where would I updated the permissions? Seems like I would want to update the folder-level and not the file level since I would just get the error the next time I try to generate a certificate.
    – James Hill
    Commented Jan 2, 2013 at 13:31
  • Well, in my development area, we have to apply certs, and I had this issue (although applying the certificate myself, I wasn't getting denied error messages when trying to access it through VS/debug mode). The location is in my post.
    – Dave
    Commented Jan 2, 2013 at 13:32
  • You're right, I don't have read access. Granting it does not solve my issue though. See edits.
    – James Hill
    Commented Jan 2, 2013 at 13:42
  • @JamesHill Actually, it did. You just have a new problem though! Change the platform target to Any CPU and publish again. I think the issue will be due to your manifest file is not well formatted (despite being a generated file)!
    – Dave
    Commented Jan 2, 2013 at 14:25

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