I found out that update KB2919355 fails with error 80070002 on a daily basis for the past year or so. Later updates were successfully updated but this specific one keeps failing.

The system is windows 8.1 pro 64 bit. 

I already tried running windows update troubleshooting tool and several other advised I found in the forum but none really helped.

Any idea what to do ?

Thanks. 

This may helps you to resolve the problem.

http://answers.microsoft.com/en-us/windows/forum/windows8_1-update/windows-81-update-failure-kb2919355-error-code/3784dd57-15d2-4278-8f29-9f7ed6ab858b