When starting zabbix_agentd on a Windows Server 2003 x64 it fails with the following message: The application has failed to start because wevtapi.dll was not found. Re-installing the application may fix this problem.
This error did not occur with agent 2.2.0. It only happens with version 2.2.1 on Windows Server 2003 x64. Installation of 2.2.1 on Windows Server 2003 x32 or 2008R2 succeeds.