sync issues

[Rising Flight]

On couple of users mailbox in outlook i can see a folder by name
Sync Issues under sync issues it has a folder by name conflicts,Local Failures
sync issue has 10,000 mails, conflicts has 5000 mails.
How do i clear these emails from server side, and also i am not able to clear them from outlook
as i am getting error

[#2 · Accepted solution]

Can you delete them from OWA?  It may help if you can provide details about the error message you are receiving if that doesn't work.  Also, I would recommend reviewing the sync issues and resolving whatever is causing them.