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Error message when you try to sign in to Communicator or to Lync: "There was a problem verifying the certificate from the server"


View products that this article applies to.

Symptoms

When you try to sign in to Microsoft Office Communicator or to Microsoft Lync, you receive the following error message:

There was a problem verifying the certificate from the server. Please contact your system administrator.

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Cause

This issue occurs when the correct certificate is not installed on the computer. Because 1,024-bit certificates are rooted to 2,048-bit certificates, you may have to download and to install the required root certificate before you can successfully sign in to Office Communicator or to Lync.

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Resolution

Resolution for users

To resolve this issue, users should download and install the rootsupd.exe update. This update is available for download from the Microsoft Download Center:

Update for Root Certificates For Windows XP [February 2012] (KB931125)

    Note This item updates the list of root certificates on your computer to the list that is accepted by Microsoft as part of the Microsoft Root Certificate Program. It does not allow for any optional configuration or GUI. 

    Resolution for Help Desk

    To resolve this issue, Help Desk should download and install the new root certificate that is needed for affected users. The certificate is available for download from the following third-party website:

            https://www.entrust.net/downloads/binary/entrust_2048_ca.cer

    Note This item updates the list of root certificates on your computer by way of a wizard interface.

    To install the certificate, follow these steps:  

    1. Open the certificate.  
    2. Click the Install Certificate button.
    3. When the Certificate Import Wizard starts, click Next >.
    4. Select Automatically select the certificate store based on the type of certificate, and then click Next >.
    5. Click Finish to install the certificate.
    6. Click OK to complete the process.

    The third-party products that this article discusses are manufactured by companies that are independent of Microsoft. Microsoft makes no warranty, implied or otherwise, about the performance or reliability of these products.

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    More Information

    In large-scale situations, you can use a Group Policy object (GPO) to push the new root certificates to all users or to all computers (as appropriate per each user's domain policy). To do this, create a new Group Policy setting and then import the entrust root certificate to the appropriate location.

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    Keywords: vkb1, vkb250, kb

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    Article Info
    Article ID : 2014466
    Revision : 4
    Created on : 6/21/2018
    Published on : 6/21/2018
    Exists online : False
    Views : 363