<< Solved >> Mac-Windows Dual Boot - Clock Is Off

[HacMac]

I'm using Windows 10 and MacOS (Monterey) on the same machine. I've already changed the time system (Win set to UTC) according to this guide:

Fix incorrect time in Windows + OSX dual boot

I just thought I'd give people an easy to find guide for this information. Hope the mods are alright with that, and that this doesn't violate any posting guidelines. 1. Why does this happen? The simple explanation is; Windows uses Greenwhich time, and OSX uses Universal Time. It's as simple...

www.tonymacx86.com

But the problem is that the Windows clock is still off when booting Windows after running MacOS. It's only showing the correct time when i manually sync the clock in Windows. Now i wanted to have it automatically sync on startup so used this solution:

How can I sync the computer's clock upon startup?

I have several servers hosted with GoGrid, and every time I reboot one of my cloud servers, the system clock is incorrect. The server isn't a member of a domain, so I just have the OS set to sync w...

stackoverflow.com

".. Windows Time service w32time to be automatic..."

But that's not working for me. It doesn't seem to run a clock sync on startup. Since time.microsoft.com isn't working most of the time i use time.nist.gov instead btw.

Any ideas?

 

[Edhawk]

Have a look at the methods proposed for fixing the Time discrepancy in the OC Troubleshooting guide.

Miscellaneous Issues | OpenCore Install Guide

 

[HacMac]

Have a look at the methods proposed for fixing the Time discrepancy in the OC Troubleshooting guide.

Miscellaneous Issues | OpenCore Install Guide

I don't use boot camp since i boot from different drives. So the first link is not for me. The second link shows what i've already done and is not working. Did i miss something obvious?

 

[Edhawk]

Do you mean you followed these instructions to create a new Regedit entry, to set the RealTimeUniversal in Windows?

 

[HacMac]

@Edhawk Yes, that's what i did.

 

[Edhawk]

Ok, that should work, it has for me in the recent past.

Have you checked to see if the new DWord entry is in place?

 

[HacMac]

Ok, that should work, it has for me in the recent past.

Have you checked to see if the new DWord entry is in place?

Yep, it's in place. But it may started to work now. Looks ok currently. I never changed/edited something other than mentioned above. I wonder whether the computer needed a proper disconnect from mains to get it working or something.

 

[Edhawk]

Some of the posts i read on this issue said a hard/cold boot was required to get the Windows system showing the correct time.

 

[HacMac]

Some of the posts i read on this issue said a hard/cold boot was required to get the Windows system showing the correct time.

I'm pretty sure that was also my problem. It's working for me now. I appreciate your help.