Installing a UWP package on Windows 10 gives HashMismatch certificate error

Question

We have previously successfully installed a packaged debug version of our application on Windows 10.

When now try to install by running the Add-AppDevPackage.ps1, when it prompts me to install the certificate, I get the error:

Error: could not install the certificate. Status: HashMismatch. For more information, see http://go.Microsoft.com/fwlink/?LinkID=252740

I can see that the appropriate certificate in the Trusted People certificate store - so the Certificate has been installed ok.

Has anyone seen this and/or got a solution to this problem?

Answer 1

If the certificate is already installed, you don't need to run the powershell script. Have you tried to double click the package to install?