Hello Srikanth,
Please perform these steps and update the status :-
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WARNING: We strongly recommend that you back up the registry before you make any changes to it. Incorrect changes to the registry can result in permanent data loss or corrupted files. Modify only the keys that are specified. Read the document How to back up the Windows registry for instructions.
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1.In the registry, navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\
2. Back up the registry key.
3. Delete the PendingFileRenameOperations registry value from the right pane.
4. Install the software without restarting the computer first (Restarting the computer may result in the registry key being placed back in the registry before installation.)
5. Restore the registry key from the backup location.
Note: If you do not find the PendingFileRenameOperations registry value in the location above, this error message can be generated if the PendingFileRenameOperations registry value exists in the following location(s):
HKEY_LOCAL_MACHINE\SYSTEM\CurrentSetXXX\Control\SessionManager\
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1. Look at the registry value to see what applications are pending.
2. In the registry, navigate to:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\SessionManager\PendingFileRenameOperations
3. Locate all entries with a status of "Pending."
4. Rename the value of that entry, placing a "2" on the end of PendingFileRenameOperations.
5. Restart the computer.
Referred from :-
Installer Information - "Symantec Endpoint Protection has detected that there are pending system changes that require a reboot." when trying to install SEP 11.0 on Windows 7
http://www.symantec.com/docs/TECH95608
Please update the status,
Cheers!