[vc_row][vc_column][az_blank_divider height_value=”50″][az_column_text]There was a problem acquiring a personal certificate required to sign in. If the problem continues, please contact your support team.

If you are still experiencing issues after trying out Microsoft’s help with removing certificates and Credentials from the Credentials Manager found here http://support.microsoft.com/kb/2604176 it might be because you have setup Federated Single Sign on and have a self-signed or untrusted certificated publishing your ADFS

The best way to resolve this issue is to trust the certificate of your ADFS published site or alternatively stop being so cheap and purchase a certificate online 🙂 However I am cheap and therefore used the following steps to trust my self-signed certificate.

Go to the HTTPS address of the ADFS published site (https://adfs.domain.com) and click certificate error in the URL Navigation bar.

Then click View Certificates

Once the Certificate tab opens click Install Certificate

Click Next

Select Place all certificates in the following store and Browse to ‘Personal’ and select OK

Click Next

Click Finish

Now you will need to do the procedure again but this time adding the certificate to ‘Trusted Root Certification Authorities’

Once completed you should be able to now sign-in on Lync 2010 Online for Office 365![/az_column_text][az_blank_divider height_value=”50″][/vc_column][/vc_row]