Thursday 2 August 2012

Android error sending email: Unable to sign or encrypt message certificate not installed

Someone in the office came to me with a problem today, saying that every time they tried to send an email, the following message is displayed:

unable to sign or encrypt message certificate not installed

It turns out that, for some reason, the option to sign outgoing messages had been turned on by accident - without any client certificate installed for this feature to actually work.

To fix it - there are two options:

1) Install a client certificate if you actually want to sign outgoing emails.

2) Turn signing off.

Hardly anyone signs emails and I am guessing that most people who want to use it will already know how to!

As for turning signing off, it is pretty straight forward.

1. Go to Email settings (Easiest is in the email client, click the menu button and go to settings).

2. Go down to Security Options

3. Untick sign.


Hope this helps!

25 comments:

  1. it worked..thanks a lot:)

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  2. youre a god send lol just happened to me

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  3. Did not help. Apparently encryption is my problem not signing.

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  4. When someone sends you a signed email on reply it automaticly clicks it so you need to go and unclick it. Any idea on how to set it so this does not happen. I am not having this problem on any other devices.. any ideas?

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  5. Its working now thank you very much :)

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  6. Hello!
    Is there any other way than to manually deselect it for each and every reply?

    ReplyDelete
  7. thank you, it worked great! Don't know how I got that security thing turned on but its turned off now!

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  8. thank you, it worked great! Don't know how I got that security thing turned on but its turned off now!

    ReplyDelete
  9. wow....it worked. thank you so much for sharing!

    ReplyDelete
  10. Still getting same error.....

    ReplyDelete
    Replies
    1. Try restarting your phone after you uncheck the necessary box

      Delete
  11. It turns out that signing can get turned on for individual emails even if the global settings are turned off, particularly if you are replying to an existing email. To turn off:

    1) tap OK on the error message
    2) with the message you're trying to send still open, tap the menu button
    3) tap "Security"
    4) Untick the check box(es) by "sign" and/or "encrypt" as necessary.

    ReplyDelete
  12. i have deselected the sing and encrypt boxes from the settings and security settings for my account. I have also checked that when I have the the e-mail I want to send open the same boxes are not checked in the security tap. When i try to send the message it goes to the outbox but it stays there. It is not delivered even after 10 minutes.

    ReplyDelete
  13. I've followed all of the suggestions but still get that damn error message. Any other suggestions?

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  14. Also, I'm selecting "DONE" after unchecking "sign" but when I go back into the acct. it's there as if I never unchecked it

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  15. Never mind, I restarted my phone and that seems to have done it.

    ReplyDelete
  16. How about the samsung x01sc or B7320

    ReplyDelete
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