How Will the Windows Time Zone Changes Affect Active Directory and Servers?

Does anyone know how the british columbia time zone changes will affect **Active Directory and other servers**?

Do we need to patch the servers immediately after **Patch Tuesday** for the time-zone changes to take effect, or is there a recommended **phased approach using GPO**?

Ideally, I’d like to test the changes on a few test machines first to identify any potential issues, such as:

* Account lockouts or authentication issues caused by time-zone changes * Kerberos/AD-related issues * Applications or monitoring tools such as **Zabbix** logging timestamps using the old PST/PDT configuration * Any other potential impact on servers or applications

Has anyone discussed with Microsoft? What was your approach for testing and rolling it out safely?

[https://techcommunity.microsoft.com/blog/dstblog/interim-guidance-for-british-columbia-time-zone-changes-2026/4544988/replies/4561787](https://techcommunity.microsoft.com/blog/dstblog/interim-guidance-for-british-columbia-time-zone-changes-2026/4544988/replies/4561787)