Date set to 24 Nov 2040 on OS startup

Opened system preferences > selected date and time , opened the pad lock and entered admin name and password > unchecked the box for set date and time automatically , and clicked on drop down arrows of date / Month /Year ( below bottom right side on the keyboard i a key pointing towards right side so used it ) and selected the year 2040 it couldn't set but the last year that is to be set as 2038 and exactly it is 1/1/2038 , as some limitations are there in the software .

Clicked on revert the Date /Month/Year was set to present , and once again checked the box for set date and time automatically .

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I bought a new MBP 15 Late 2016 earlier this week. Been having all kinds of issues with tied to time...have rebuilt it twice. Same thing happening to me today whenever trying to use time.apple.com to set date and time automatically. Every time I rebooted, time was being set to late 2040.

Finally I tried the NVRAM / SMC resets. Wasn't even sure if I did those right as there is no confirmation when you do this. Booted my machine back up and before I logged in, I could tell the time had changed and was wrong. Someone walked in my office, so it was 2-3 minutes later before I logged in. By the time I did, the system time fixed itself before I had logged in.

In short, it might be that if you are having this issue, you just need to wait 10-15 seconds before you log in. I'm not sure if it was this on its own or this paired with the NVRAM / SMC reset that worked, but regardless, my machine is finally working correctly again with the set date and time automatically enabled.

And if none of this works for you, setting the time manually with the time zone detected automatically was working for me fine...just frustrating that part of the functionality of your $3000 computer doesn't work. Feels very Microsoftish.

How to reset NVRAM on your Mac - Apple Support

Reset the System Management Controller (SMC) on your Mac - Apple Support

I just start having this problem today, and opening up the time preferences, the time goes back to normal on check from the time.xxx.apple.com servers. If I uncheck the automatic check from the servers, then the time is correct on next reboot, so seems like this check on startup is giving max date value instead of real time, but works ok after startup. Could it be because the network has not yet manage to connect to internet at time of startup and check?

Yes, aware I have 90-day support, or three years in my case with Apple Care. It's not an issue with my MBP. It's an issue with macOS 10.12.4. I have two other MBPs in the office that have been rebuilt and macOS 10.12.4 installed and every single one of them will not boot with the correct time when you have time and date set to update automatically. The only way to get them to reliably boot with correct time is to not have the time and date set automatically.

I've read in several places that macOS 10.12.5 beta4 corrects the issue. So no, I'm not going to waste my time sitting on the phone talking to Apple developers.

I have the same issue. I have done a complete reinstall - twice!! (including erasing the disk so that it is a "clean" install) but the issue is still happening. I am talking to Apple Support but no solutions yet.

I have not found any references to Mac v 10.12.5 corrects the issue - I would be grateful for the links.

Thanks.

The actions you describe for System Preferences -> Date & Time.

Are you saying that this set the date/time to the correct values as a one off or you saying that the fixed it permanently (i.e. 2040 issue did not happen again)??

You are entitled to 90 day telephone support from Apple. Try contacting them.

Apple Support Contact

Apple Support by e-mail or chat

https://support.apple.com/en-us/HT204063

This reset seem to have fixed the problem for me. I can have the automatic checkbox on now without date problem.

I have the same issue, i tried to clean install of macOS but had the issue again. also my safari auto login websites are cleared :(

I have this issue only with my MBP 15inch 2016 with touch bar... MBP 13inch 2014 never had date/time issue? where you saw that issue has been fixed in beta??

NVRAM did not fix the issue for me!!

When I tried to change the year to 2040 , the year could not exceed after 2038 , clicking on revert , changed to present date/Month/Year .