Event ID - 171

Event Id171
SourceActive Directory Rights Management Services
DescriptionSetup has detected that Internet Information Services is not installed. Install Internet Information Services prior to installing Active Directory Rights Management Services.
Event InformationAccording to Microsoft :
Cause :
This event is logged when Setup has detected that Internet Information Services is not installed.
Resolution :
Remove Web Server (IIS) role and install the AD RMS role
AD RMS uses Internet Information Services (IIS) for communicating with the AD RMS-enabled clients. When you install AD RMS, the required components of the Web Server (IIS) role are automatically installed. If any required component cannot be installed, the AD RMS installation will not succeed.
Use the "Remove the Web server (IIS) role" procedure to remove the Web server role.
Use the "Install the AD RMS role by using Server Manager" procedure to install AD RMS again.
Note:
In a production environment, AD RMS should be the only application running on the AD RMS servers in the cluster. If the Web server role on the AD RMS servers are used for applications other than AD RMS, you should make sure that the Web server role can be removed from this computer.
To perform these procedures, you must be a member of the local Administrators group, or you must have been delegated the appropriate authority.
Remove the Web server (IIS) role
To remove the Web server (IIS) role:
Note:
Because all configuration information is stored in the AD RMS configuration database, a backup of the Web server is not required before uninstalling. However, if you have made any changes above and beyond the default configuration, a backup is recommended.
1.ClickStart, point toAdministrative Tools, and then clickServer Manager.
2.In theRoles Summary section, clickRemove Roles, and then clickNext.
3.Clear theWeb Server (IIS) check box, and then clickNext.
4.ClickRemove.
Install the AD RMS role by using Server Manager
To install the AD RMS role by using Server Manager:
1.ClickStart, point toAdministrative Tools, and then clickServer Manager.
2.In the Roles Summary section, clickAdd Roles, and then clickNext.
3.Select theActive Directory Rights Management Services check box, and then clickNext.
4.Complete the appropriate information in the AD RMS role wizard setup.
5.Click Install.
6.When the installation is complete, click Close.
Verify :
To perform this procedure, you must be a member of the local AD RMS Enterprise Administrators group, or you must have been delegated the appropriate authority.
To verify that the AD RMS cluster installation is working properly:
1.Log on to a server in the AD RMS cluster.
2.ClickStart, point to Administrative Tools, and then click Active Directory Rights Management Services.
3.Verify that the AD RMS cluster was added successfully by expanding the AD RMS cluster name.
Reference LinksEvent ID 171 from Source Active Directory Rights Management Services

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