Office 2021 Proofing | Tools Offline Installer Best

For global teams, multilingual writers, and organizations with strict air-gapped networks, Microsoft Office is only half the solution. The real utility comes from Proofing Tools—spell checkers, grammar engines, thesauruses, and hyphenators.

While Microsoft 365 streams these tools online, Office 2021 (Perpetual) still allows offline installation. However, finding the correct and best offline installer is notoriously difficult. Here is how to do it right.

Open Notepad and paste this code. This example downloads German proofing tools:

<Configuration>
  <Add OfficeClientEdition="64" Channel="PerpetualVL2021">
    <Product ID="ProofingTools">
      <Language ID="de-de" />
    </Product>
  </Add>
</Configuration>

Overview
Office 2021 includes language proofing tools (spelling, grammar, hyphenation, thesaurus) that may not be installed for every language by default. An offline installer lets you add or update proofing tools without needing each client to download components from Microsoft over the internet — useful for air-gapped or bandwidth-limited environments.

What this delivers

Best approach (recommended)

Licensing and channels

Advantages vs. alternatives

Quick checklist

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Office 2021 , there isn't a single "offline installer" for proofing tools like there was for older versions. Instead, the best way to get them offline is Office Deployment Tool (ODT) to download the files first Microsoft Learn

The "best" installer depends on whether you are an individual user or a professional managing multiple PCs.

Method 1: Office Deployment Tool (Best for Professionals/Multiple PCs)

This is the only true way to create a completely offline installation source for proofing tools. Microsoft Learn Download the ODT : Get the latest Office Deployment Tool Microsoft Download Center Create a Configuration File Office Customization Tool to generate a Product ID ProofingTools Language IDs you need (e.g., Download the Files : Open Command Prompt as Administrator and run: setup.exe /download configuration.xml This saves the installation files to your local folder. Install Offline : Move the folder to the offline PC and run: setup.exe /configure configuration.xml Microsoft Learn Language Accessory Pack for Microsoft 365

The Best Way to Get Office 2021 Proofing Tools Offline Installers

When you're working in a multi-language environment or managing a fleet of computers, having a reliable Office 2021 proofing tools offline installer is essential. While older versions of Office provided standalone executable files for these tools, Office 2021 uses the "Click-to-Run" technology, which requires a slightly different approach.

The absolute "best" way to handle this today is through the official Microsoft Office Deployment Tool (ODT), which allows you to download and package proofing tools for offline use. Why Use an Offline Installer for Proofing Tools?

Bandwidth Efficiency: Download the files once and deploy them to multiple machines without repeated internet usage.

No Internet Required: Perfect for secure environments or remote areas with unstable connectivity.

Consistency: Ensure every workstation has the exact same set of spelling, grammar, and hyphenation rules. Step-by-Step Guide: Creating Your Offline Installer

To create your own offline installer for Office 2021 proofing tools, you will use the ODT to "pre-download" the files. 1. Download the Office Deployment Tool office 2021 proofing tools offline installer best

First, visit the Microsoft Download Center and download the Office Deployment Tool. Run the .exe to extract the setup.exe and sample configuration files into a folder (e.g., C:\ODT). 2. Create Your Configuration File

Open Notepad and create a file named download-proofing.xml. Paste the following code, replacing "fr-fr" with your desired Language ID:

Use code with caution.

Note: Ensure the OfficeClientEdition matches your Office installation (usually 64-bit). 3. Run the Download Command

Open Command Prompt as an administrator, navigate to your folder (cd C:\ODT), and run:setup.exe /download download-proofing.xml

This will download the necessary files into your folder. You can now copy this entire folder to a USB drive or network share to use as an offline installer on other PCs. 4. Install the Tools Offline

The best way to get an offline installer for Office 2021 proofing tools is by using the Office Deployment Tool (ODT). While Microsoft does not provide a standalone "offline EXE" for proofing tools alone, you can use the ODT to download only the proofing components for your required languages to a local folder.  Method 1: Using the Office Deployment Tool (Recommended) 

This method allows you to download proofing tools once and install them on multiple machines without an internet connection. 

Download ODT: Get the latest Office Deployment Tool and extract setup.exe to a folder (e.g., C:\ODT).

Create Configuration XML: Use a text editor to create a file named proofing.xml in that same folder with the following content (replace de-de and es-es with your needed Language IDs):

<Configuration> <Add OfficeClientEdition="64"> <Product ID="ProofingTools"> <Language ID="de-de" /> <Language ID="es-es" /> Product> Add> Configuration> Use code with caution. Copied to clipboard

Download Files: Open an elevated Command Prompt, navigate to your folder, and run:setup.exe /download proofing.xmlThis downloads the necessary files to a subfolder named Office.

Install Offline: To install on any machine from those files, run:setup.exe /configure proofing.xml.  Method 2: Language Accessory Packs  Best approach (recommended)

If you have internet access on the target machine, you can download a Language Accessory Pack, which includes proofing tools.  Go to the Language Accessory Pack for Office page. Select Office 2021 from the tabs.

Choose your language and architecture (32-bit or 64-bit) to download the installer.

Note: This is technically an "online" setup that downloads data during the process, so it is less ideal for true air-gapped systems than Method 1.  Summary of Benefits 

ODT (Method 1): Truly offline once downloaded; allows for multiple languages in one go; ideal for bulk deployments.

Accessory Packs (Method 2): Simple "click and run" but requires an active connection during the actual installation. 

Finding a direct, official "offline installer" specifically for Proofing Tools is surprisingly difficult. Microsoft does not provide a standalone .exe download link for these tools on their website; they force you to use a manual workaround.

The best and most reliable method is to use the official Office Deployment Tool (ODT). This allows you to download the proofing tools files directly from Microsoft’s servers and install them without needing an internet connection on the target machine.

Here is the step-by-step guide.

Beware of websites offering a single, all-in-one “Office 2021 Proofing Tools offline installer” that claims to work for every language and every edition of Office. These are almost always:

Microsoft does not publish a universal offline installer for consumers. Any site that claims to have one is deceiving you.

You now have the offline installer ready.

A window will pop up showing the installation progress. Once it finishes, the proofing tools for your selected language will be installed.

The best offline installer is the complete pack. Microsoft distributes two types: (Invoking related search suggestions.) Office 2021