In some parts of the world, the days lengthen by about an hour in the fall or summer and shorten in the winter. This affects the clock in your Windows system and can be distracting to the person using it. Therefore, there is a feature called Daylight Saving Time in Windows systems that seems to be greyed out and many Windows users are unable to use or turn on this feature.
This could be because they may have set the wrong time zone that doesn't require daylight saving time functionality, so it's greyed out.
You can also enable this feature by forcing the system to do so by changing the registry files on your system. If you are also facing this problem, don’t worry. We have explained two methods by which you can easily resolve the issue and be able to use the Daylight Saving Time feature on your Windows PC.
Step 1: Press the Windows key on your keyboard and type Date and time settings .
Step 2: Then select the Date and time settings from the search results page, as shown in the image below.
Step 3: This will open the date and time page on your system.
Step 4: Select a different time zone in the Time Zone option.
Step 5: Now you can notice that the Automatically adjust for daylight saving time option will be available on your system.
If changing the time zone options on your system does not resolve the issue, you can edit the registry on your system table files to force the system.
Before you continue, we ask that you export the registry files to the system, as only then can you restore the registry files. If something goes wrong while editing, the system can be corrupted and serious problems can result.
Step 1: Press the Windows and R keys simultaneously on the keyboard to open the Run console.
Step 2: Type regedit in the run box and press Enter.
Step 3: Now accept the on-screen UAC prompt by clicking Yes.
Step 4: Once the Registry Editor appears on the screen, clear its address bar, type the following path and press Enter.
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\TimeZoneInformation
Step 5: This will take you to the registry key named TimeZoneInformation on the left panel.
Step 6: On the right side of the Registry Editor window, you can find a Dword value called DynamicDaylightTimeDisabled.
Step 7: Double-click on it to open its Edit Properties window.
Step 8: Now check its Value Data field and make sure it is 0.
Step 9: If you want to disable the automatic adjustment daylight saving time function, please enter 1 in the text box and Click OK.
Step 10: Close the Registry Editor and restart the system once.
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