SharePoint IRM – Azure RMS not installed issue

Recently we have faced an issue to installing Azure RMS Connector version 2.1 on SharePoint 2013 server.

“The required Active Directory Rights Management Service Client (MSIPC.DLL) is not installed, IRM will not work until the client is installed.”

The problem here SharePoint unable to load the module where it is the MSIPC.DLL and returns winerror 126 (0x7e) .

When we investigate the problem we have faced 2 issues.

• The DLL location read from registery where the key data has an extra “\” at the end of it.
  HKLM_\SOFTWARE\MICROSOFT\MSIPC\CurrentVersion\InstallLocation:
  C:\program files\active directory Rights Management Services Client 2.1\ -< HERE
  We change it as:
  C:\program files\active directory Rights Management Services Client 2.1
• Related VC++ Runtime Redistributable package (where msipc.dll have a dependency) is not installed in the server. When we installed VC++ 2012 redistributable issue has been resolved.
  https://www.microsoft.com/en-us/download/details.aspx?id=30679