Download and Install

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DUAL-MODE INSTALLER

Dual-mode installer can be downloaded by users to self-install/upgrade Tier1 for Outlook.

Before you install or upgrade your Tier1 for Outlook version, ensure you have the corresponding managed package version.

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2026.1 version 5136  This latest version is backwards compatible with any REST version currently installed on Salesforce org.

SYSTEM-ONLY INSTALLER

System-only installer is intended to be used in scripted environments.

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2026.1 version 5136 This latest version is backwards compatible with any REST version currently installed on Salesforce org.