Windows 10: Windows Time not syncing after sleep

Every time my PC sleeps, the clock appears to stop functioning - upon resuming, the time shown will be the time that the PC slept. While it does show some other symptoms of a bad CMOS battery the BIOS time is also reset when the PC is turned off, the issue has persisted across two separate motherboards and four CMOS batteries two per motherboard, so I believe the CMOS battery isn't the culprit. I have also tried re-installing Windows including updating to Windows 11 and re-registering the Windows Time process. None of this has had any effect. Is it possible that something on the case

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Unable to sync Windows 10 time with time servers

I have a new, OEM installation of Windows 10 that is unable to contact any time servers to sync the system time. Each attempt gives me a timeout error, and pinging the time server times out as well. Here is what I've tried:

• Checked that the Windows Time service is running and set to automatic startup, and restarted it
  
• Disabled my firewall
  
• Tried using time.nist.gov, which is currently working according to NIST
  
• These steps using w32time, which appeared to succeed but didn't update the time
  

The time is currently off by 7 hours, which shouldn't be far enough to break Internet syncing.

EDIT: Just tried the same steps on my other computer which boots only Windows (albeit an longer-standing installation of 10), and had the exact same issue, except when I try syncing it simply says "An error occurred when Windows was synchronizing with time.nist.gov." So I highly doubt it is dual boot-related. What is going on?

 

Display will not sleep.

Hi,

Thank you for posting your query in Microsoft Community. I understand the inconvenience caused to you and will help you solve the issue.

I suggest you to follow the steps provided below and check if it helps.

• Click on Start>Settings>System.
• In the left navigation pane, click on Power & sleep.
• In the right pane, select the time limit for the system to go to sleep from the drop down list.

Hope the information is helpful. Keep us posted on the status for further assistance.

 

Windows losing time during sleep

I'm at a loss with this one. Dell XPS 13 9350. Windows is up to date. Firmware is latest available (problem existed with earlier firmware as well). Tested BIOS battery good.
The issue is that when the laptop sleeps, time just stops. When it is awakened, the time is exactly where it was when the machine was put to sleep. Going to Date and Time and clicking on sync will update to the correct time.
Things I've tried:
SFC scan (no issues)
Rolling back Windows
Resetting Windows

I'm thinking it's some issue with the hardware/firmware but wondering if anyone has suggestions, thanks!

edit: I've now also wiped the drive and installed Windows clean. No change.