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Common problems HP Solution Center not working : Adobe Flash Player Error and Unable to scan
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HP LaserJet Pro MFP M428dw

When I try to add a CA certificate to my LaserJet Pro MFP M428dw I get the following error:

 

> Invalid password input. Try again.

 

The error doesn't make much sense as I'm trying to import a (public) CA certificate from a file, there is no password involved. Some extra info:

 

  • The certificate comes from [content removed] and it's of course not password protected
    • I checked the .pem file contents and it's a normal base64 encoded certificate
    • I also tried with other CAs with no luck
  • I tried both PEM and DER formats
  • I tried with multiple browsers (Firefox, Chrome)
  • The printer is running the latest available firmware (TETONXXXXN002.2339A.00)
  • It used to work in the past (a few firmware versions ago)
  • I need this to enable the scan to email function
    • No I don't want to disable the certificate validation

Here is a screenshot of the error:

 

edirap_0-1703003586408.png

 

 

Any hint? Thanks!

1 ACCEPTED SOLUTION

Accepted Solutions
HP Recommended

I figured it out: that error is triggered when uploading a ECC certificates. Uploading RSA certificates works fine.

View solution in original post

1 REPLY 1
HP Recommended

I figured it out: that error is triggered when uploading a ECC certificates. Uploading RSA certificates works fine.

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