Recently, one of my users complaining because they he could not activate Visual Studio with his MSDN account. It works fine on another machine, but not his. I tried mine, and I still got the same error - thus it was safe to rule out it is not license / user issues, but more towards computer issue. Error : Microsoft Visual Studio We could not add the account Service returned error. Check InnerException for more details Troubleshooting : Back to basic - let's start from beginning... Trying to sign in will throw this error window. Selecting Close on above window would throw this Security Alert warning.  Selecting View Certificate on above window would give us this.  Let's view Certification Path, and view Root CA certificate by selecting the root certificate in Certification path | View Certificate  So it seems the Root CA (in my case) is issued by Baltimore CyberTrust Root.  Do I have that on that mach

In previous post , I demonstrated steps to install a Certificate Authority server as well as enabling Web enrollment. All good so far. However, when we tried to proceed with web enrollment, below message box appeared : In order to complete certificate enrollment, the Web site for the CA must be configured to use HTTPS authentication. To make it worst (not really), if we tried to access to the web page by using HTTPS, no page can be displayed.  Luckily, Microsoft has compiled all needed steps on how to get it resolved, as posted here . Implementing SSL on a Web site in the domain with an Enterprise CA The following example will assume that you have an Enterprise CA from which to issue certificates. Further, the assumption is that you have a Certification Authority Web Enrollment pages installed, either on that CA or on another computer in the domain. This example will walk through the steps necessary to do the following: Configure an appropriate certificate template for SSL