After hitting Enter, you might not see any visible feedback. This lack of response simply means that the command was successful. Occasionally, users may flush their DNS cache only to realize that issues persist, such as slow-loading sites or connection errors. These may be attributed to more than just outdated records; they could include other underlying network issues. Each of these commands plays a vital role—essentially refreshing your system’s memory regarding domain names.

Step II: Check Network Settings

By issuing them periodically or whenever connectivity issues arise, Outlook Stuck on Synchronizing Folders you ensure that your connection remains robust and error-free. After rebuilding the OST file, it’s important to check for any missing mailbox data. If you find any missing items in the new OST file, you can recover them from the backup OST file using Stellar Converter for OST. This professionalOST to PST converter toolcan extract data from the backup OST file and convert it into PST file, which you can easily import into Outlook. You can easily search for the missing items, select them, and save them in PST and other file formats, such as MSG, EML, RTF, HTML and PDF.

• It’s such an effective method that many even suggest doing it regularly as routine maintenance for your home network.
• When you clear out those old records, your system shortens the time it takes to resolve domain names—meaning that websites can load faster.
• According to a 2024 survey by TechRadar, about 40% of users who faced intermittent internet problems found relief simply by flushing their DNS cache.
• This command checks the listening services for DNS queries on port 53.
• Addressing these problems effectively often boils down to a few strategic troubleshooting steps.
• This tool is designed to extract mailbox items from orphaned or inaccessible OST files.

Method 2: Check if the Work Offline Mode is Disabled

For Mac users, you can use Terminal and run the command `sudo killall -HUP mDNSResponder` for macOS Mojave and later versions; this process clears outdated entries and can help resolve connectivity issues. During the scanning process, security applications, like antivirus software or Windows Firewall might lock the Outlook data file, leading to the sync issues. To check if the security application is causing the issue, you can temporarily disable the antivirus program or Firewall and then update the folders. If the issue is resolved, it indicates that your antivirus software or Firewall is interfering credential loop in Microsoft 365 with Outlook. To resolve this, you can add Outlook and its related processes as exception in your security software or consider switching to a security application that is compatible with Outlook.



Flushing the DNS cache on your MacBook Pro running macOS Ventura is an essential troubleshooting step that can help resolve connectivity issues fix Outlook after Windows update issues often caused by outdated or corrupted entries. Additionally, if your system feels sluggish, it’s a good idea to delete applications that are no longer needed to free up space and improve overall performance. Over time, as you browse and download various files, your system may store incorrect DNS information that leads to frustrating loading errors or inability to connect to certain websites.

Solutions to Fix the Sync Issues in Outlook

The quickest method is to press Win + R, which opens up the Run dialog box like unlocking a door to an entire world of settings. What you’re doing here is providing your system with commands that can reshape its behavior. Now, manually sync your mailbox using theUpdate Folderbutton under theSend/Receivetab.

The journey of an Email: From sender’s domain to recipient’s inbox!

For instance, you might find that a website fails to load despite your internet being otherwise active. Flushing your DNS cache plays a crucial role in resolving connectivity issues that can disrupt your online experience. When you navigate to a website, your system refers to the DNS cache to find the related IP address. However, if you’ve accessed that webpage recently, it might hold onto outdated or corrupted information. This means that even if the website has changed its IP address, your computer might still be trying to connect using incorrect data. To flush the DNS cache, you can open the Command Prompt on Windows and enter the command `ipconfig /flushdns`.

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It’s happened twice today, where I get a PC which is not connecting to Exchange server. I have no issues sending email from same account from my phone, laptop, or web mail. Moving forward from a simple reboot, we now focus on ensuring that your network settings are configured correctly. If prompted, enter your password—this is required for administrative privileges. Remember that while you type your password, no characters will appear in the Terminal for security reasons; just hit Enter once you’ve typed it.



After successfully flushing your DNS cache, if you’re still experiencing issues with connectivity, it can feel frustrating. A common problem users face is that certain websites might continue to be inaccessible or slow to load. This isn’t unusual—specific hiccups can arise when the system is still resolving domain name associations post-flush.

Why Choose Stellar?

Now, let’s look at specific challenges that this simple action can resolve effectively. Resolving these concerns shouldn’t take long either; averages suggest that fixing slow connections often takes around 15 minutes, while addressing website access issues typically wraps up in about 10 minutes. Sometimes trouble can originate from the router side of things rather than your individual device. Restarting your router can refresh its internal processes much like restarting a computer would do for your operating system. One of the main benefits of flushing your DNS is the refreshing of these stored records.