This guide covers what an offline installer is, why it is necessary, the difference between the official Microsoft method and third-party tools, and a step-by-step instructions.
Enable users to download a single, self-contained executable that installs Microsoft Office (365 / 2021 / 2019) on a target machine without an internet connection during installation. offline installer office
If you purchased a perpetual license (Office Home & Student 2021), you can sometimes request a backup DVD/ISO image from the Microsoft account services page under "Order History." This guide covers what an offline installer is,
When using third-party tools (like Office Tool Plus) to generate offline installers, some antivirus software may flag the tool as "HackTool" or "Trojan." This is typically a "False Positive" because these tools modify system settings to install Office outside the standard Microsoft Store or Click-to-Run processes. Always download these tools from their official repositories (like GitHub). Method B: The IMG/ISO Method (For Office 2021/2019)
When creating an offline installer, ensure you download the correct architecture for your target machine:
Before installing Microsoft Office using an offline installer, ensure your computer meets the system requirements: