Issue: -Unable to install EPS6 Client due to error in "Root Certificate Update".
Description: -Client installation getting failed despite of proper connectivity between Client and Server.
Observation: -Client Agent Service gets installed successfully. -Installation process doesn't proceed further. -Error "Installer setup file is corrupt" occurs while executing the setup file "qhnt64.exe" manually.

Conclusion: -The client installation was getting failed due to error in "Root Certificate Update". -Related event logs of certificate error found under Application Event Logs. Details: Failed to add certificate to Third-Party Root Certification Authorities store with error: Access is denied. Event ID: 4110; Source: CAPI2
 Solution: -Applied the certificate "MicCerTruLisPCA_2009-04-02" (By Right Click and Install Certificate) -Client successfully got installed on system.
Source: http://www.microsoft.com/pki/certs/MicCerTruLisPCA_2009-04-02.crt
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