Are you running into those pesky 401 error codes trying to log in to or navigate around in the LunaDNA platform? Below is one of the most common causes we've run across and a fix!


Your computer's system clock is out of sync with reality

You might never even realize it until you start logging into websites that have a security rule in place that restricts the actual time it takes to complete your log in. This security protocol helps prevent malicious attacks that can put your account at risk. If your computer's clock is out of sync, we can't be sure the true time it took to complete your log in attempt. Mac computers have a built in mechanism to warn you about this and guide you to correcting it before letting you use a web browser. Windows computers are not as straight forward. 


Here are the steps you can take to re-sync your computer's clock if you are using Microsoft Windows. (Note: Windows 10 is a little different - see farther down for a couple of options.)

  • Open the Control Panel (if you don't know how to get here, type "control panel" into your search box in the start menu).
  • Click on "Date and Time" (scroll or use the search tool to find it)
  • Click the "Internet Time" tab 
  • Click "Change Settings" button
  • Check the box that says "Synchronize with an internet time server" if you wish to automatically sync the clock. (See this link for more information.)
  • Use the drop down menu next to "server" and select a server.
  • Click "Update Now" to immediately sync the clock and verify the settings work.
  • When you're done verifying, click "Ok".

For additional details, and if for some reason you need to manually do this for a Mac, please review this https://support.apple.com/en-us/HT203413.


If you are running a computer with Windows 10, the steps are a little different:

  • Open the Control Panel
  • Click on "Clock, Language and Region"
  • Click on "Date and Time"
  • Click on the "Internet Time" tab
  • Click the "Change settings" button
  • Check the box (or confirm it is already checked) that says "Synchronize with an internet time server"
  • Use the drop down menu next to "server" and select a server.
  • If the "Synchronize with an internet time server" was already checked, then please select a different server than the one that is already selected.
  • Click the "Update now" button next to the drop down field once you have selected a server.
  • Click "Ok"
  • Click "Apply"
  • Click "Ok"
On the window at step #5 above, you can also view when your computer will synchronize next and when it was last synced.


If that still doesn't work on Windows 10, you can try this as well:

  •  Press Windows key + "r" (the window key is the rectangle with 4 smaller rectangles in it)
  • Type: "services.msc"
  • Click "Windows Time" in the "Name" column
  • Alternate click and then click "Properties"
  • Change "Startup type" to "Automatic" (if it is not already set to "Automatic")
  • Click "Start" if the service isn't started