Windows 10 Machine: Last DNS Flush Took Place - TTL Display Shows No Events

How to Check When the Last DNS Flush Took Place on a Windows 10 Machine

If you're trying to see when the last DNS flush took place on your Windows 10 machine, you might have noticed that the TTL display in the "dns" command shows no events. This can be frustrating, but there is a way to check when the last DNS flush took place using the Command Prompt.

What is DNS Flushing?

DNS (Domain Name System) flushing is the process of clearing the DNS cache on your computer. The DNS cache stores information about the IP addresses of websites you have visited, so your computer can quickly access them the next time you visit those sites. However, sometimes the information in the DNS cache can become outdated or incorrect, which can cause problems when trying to access websites.

DNS flushing clears out the cache, forcing your computer to get the most up-to-date information from the DNS servers. This can help resolve issues with accessing websites or other network resources.

Checking the Last DNS Flush on Windows 10

To check when the last DNS flush took place on your Windows 10 machine, follow these steps:

1. Press the Windows key + X and select "Command Prompt (Admin)" or "Windows PowerShell (Admin)" from the menu that appears.
2. In the Command Prompt window, type the following command and press Enter:
   ipconfig /displaydns | find /i "flushed"

   This command will display a list of all the DNS records that have been flushed (cleared) from the cache. If there are no flushed records, this means that the DNS cache has not been cleared recently.

3. To check the date and time of the last DNS flush, you can use the following command:
   forfiles /p %windir%\system32\dns /m *.log /c "cmd /c echo @file @ftime"

   This command will display a list of all the DNS log files in the system32\dns folder, along with the date and time they were last modified. The most recent log file will show the date and time of the last DNS flush.

Checking when the last DNS flush took place on your Windows 10 machine is a simple process using the Command Prompt. By using the commands outlined in this article, you can easily see when the DNS cache was last cleared and ensure that your computer is using the most up-to-date DNS information.

References

• Microsoft. (2021). Display and clear the DNS cache.

• TechTarget. (2021). DNS caching.

Note: The references provided are for informational purposes only and are not affiliated with the author or this article.