I tried to login to OCS Web Access (OCS 2007 R2), but I received the following error :

Cannot sign in because the server is temporarily unavailable.

I logged on to the Web Access server and saw that all services where running. With IIS manager I also noticed that the webservice was running and had the correct certificate. I started the Management console for “Microsof Office Communications Server 2007 R2, Communicator Web Access”. Here the information stated that the Read more »

I had a weird issue which occured at the communicator client (R2). The OCS (Office Communication Server) is version 2007 R2.

When I logged in (internal), the client had an exclamation mark. The following 2 errors occured :

Cannot synchronize with the corporate address book. This may be because the proxy server setting in your web browser does not allow access to the address book. If the problem persists, contact your system administrator.

Communicator could not retrieve calendar or Out of Office information from Exchange Web Services. Communicator will automatically  continue to retry. If this problem persists, contact your  system administrator.

When I started troubleshooting the issue I also noticed that Read more »

If you have successfully installed your certificate, but you wish to make a backup with the private key, if you do not have full admin rights, Windows will not allow it. The option for exporting the private key is then greyed out.

You must give your self access to the MachineKeys Folder: Read more »

After receiving a certificate from my SSL provider, I noticed I couldn’t import the certificate in IIS. A bit strange, because I still had a pending request. I could just add the certificate to my store, but I needed the Private Key.

Whatever I did, nothing seemed to work… so I used the following procedure to restore the Read more »

In the IIS 6 Resource Kit, there’s was a tool named SelfSSL.exe. This tool has been replaced with SSLDiag.exe. With this tool you can create a certificate without the need of a Certificate Server or a third-party certificate. You can Read more »