Office 2021 License OEM Windows

Office 2021 License Specifications (Windows Only)

Editions & Included Apps

• Home & Student 2021

  • Word, Excel, PowerPoint, OneNote

• Home & Business 2021

  • Everything in Home & Student + Outlook

• Professional 2021

  • Everything in Home & Business + Access and Publisher

License Types

• Retail (Perpetual)

  • One-time purchase.

  • Transferable to a new PC only if fully uninstalled from the original machine.

• OEM

  • Pre-installed by PC manufacturers.

  • Permanently tied to the first computer it’s activated on; cannot be moved.

• Volume License (VL)

  • For organizations deploying multiple seats.

  • Activation via KMS (Key Management Service) or MAK (Multiple Activation Key).

Activation & Entitlement

• Product Key

  • 25-character alphanumeric code.

• Retail/OEM

  • Sign in with your Microsoft account to activate.

• Volume License

  • KMS: Client must contact your organization’s KMS host.

  • MAK: Uses limited-token activation via Microsoft’s activation servers.

System Requirements (Windows)

• Operating System

  • Windows 10 (build 1904 or later)

  • Windows 11

• Processor

  • 1.6 GHz or faster, 2-core (×86-64 architecture)

• Memory

  • 4 GB RAM (64-bit)

• Storage

  • 4 GB available disk space

• Display

  • 1,280 × 768 resolution or higher

Single-Device License

• Perpetual Office 2021 installs on one Windows PC only per product key.

• If you need to install on multiple devices, consider a Microsoft 365 subscription (allows up to 5 installations per user).

Installation & Activation Guide

1. Download the Installer

   • Visit https://office.com/setup and sign in with your Microsoft account.

   • Enter your 25-character product key.

   • Choose the Windows download for Office 2021 (32-bit or 64-bit).

2. Install Office

   • Close all Office applications.

   • Run the downloaded .exe and follow the prompts.

3. Activate Office

   • Launch any Office app (e.g., Word).

   • When prompted, sign in with the same Microsoft account linked to your key.

   • If asked, re-enter your product key and click Activate.

4. Verify Activation

   • In any Office application, go to File → Account.

   • Confirm “Product Activated” under Product Information.

Potential Issues & Troubleshooting

• “Activation Error 0xC004F074” (KMS Not Found)

  • Ensure the PC can reach your KMS host over port 1688.

• “We’re Sorry… Can’t Verify Product Key”

  • Double-check for typos in the 25-character code.

  • Confirm you’re signed in with the correct Microsoft account.

• Architecture Mismatch

  • Installing 32-bit Office on a 64-bit OS (or vice versa) may fail.

• Reduced Functionality Mode

  • Go to File → Account → Change License to re-activate.

• Volume License Errors

  • KMS: Verify the KMS host is active and your client count meets the minimum threshold.

  • MAK: Check remaining activation tokens in the Volume License Service Center.

• Repair Installation

  • Open Control Panel → Programs and Features, select Microsoft Office 2021, then Change → Quick Repair (or Online Repair for deeper fixes).

Additional Help & Contact
For volume-license deployment advice, troubleshooting, or any other questions, reach out via WhatsApp:
📱 +971 56 992 9566