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When he reboots his laptop, he cannot connect to Exchange via Outlook. If he flushes DNS, Outlook OST Vs PST repair he can reconnect even though the address/host name doesn’t change and his pingpath is unaltered. Imagine being able to load websites faster just by executing this simple command! This procedure proves especially useful if you’ve noticed that certain web pages are loading slowly or displaying outdated information after changes were made in your network configuration. This often happens because the cached DNS record is stale or incorrect.

Occasionally, users may flush their DNS cache only to realize that issues persist, such as slow-loading sites or connection errors.For Mac users, you can use Terminal and run the command sudo killall -HUP mDNSResponder for macOS Mojave and later versions