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Mitel Build and Microsoft Server Update Compatibility List

Use this list to determine which Microsoft Windows Server updates are compatible with the Mitel build you are running. Do not install a Windows Server update unless it has been confirmed compatible with your specific Mitel build version.

Warning callout (styled as a high-visibility alert):

Do not install Windows updates KB5036896 or KB5036899. If you have already installed these updates, remove them immediately — they prevent critical services from starting.

If you are unsure which build you are running or need assistance, contact us directly.

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