Microsoft Fixes DST Bug in Optional Update, General Patch Coming Next Month

Last month, we reported that several Windows users are experiencing issues due to a Daylight Saving Time (DST) bug. Chilean users were the first to be hit because the Chilean government announced in August that it was changing clocks by one hour in the country starting September 4 instead of September 10, along with other time zone updates.

This resulted in issues with incorrect time in Outlook, calendar, third party apps, logs, Kerberos authentication, and more. In fact, Microsoft noted that even users outside of Chile could be affected if they connect to servers in the country. At the time, the Redmond-based tech firm released a few workarounds, but now they’ve released an official fix.

The fix is ​​currently available as a cumulative preview update as KB5017380. This update was originally released to Insiders only, but is now available to non-Insider as an optional update as well.

It’s important to note that since this is an optional update available as a preview, you won’t receive it automatically. In fact, you will have to go through the “finder” of manually checking for updates in Windows Update.

Microsoft says the update will fix this DST issue and more on the following Windows SKUs:

Those who want to wait for the update to go public will have to do so before Patch Tuesday next month, which this time falls on October 11th.

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