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What Does the Microsoft 365 Offline Installer Install? Explained
Question details
The user wants to know what specific applications, background services, and folders are created on their system when using the Microsoft 365 offline installer.
- Product
- Microsoft 365
- Device & OS
- Windows
- Scenario
- Installing Microsoft 365 using the offline installer package.
- Observed behavior
- The user observes multiple folders (such as ProgramData and Office 15) and Click-to-Run services being created and seeks clarification on whether full applications are installed rather than lightweight self-contained apps.
Before analyzing your installation directories, ensure you have administrator privileges on your Windows PC and have enabled the option to view hidden items in File Explorer to see folders like ProgramData.
Understand the Microsoft 365 Offline Installer Components
A breakdown of where the offline installer places full desktop applications, configuration data, and background update services on your local drive.
The Microsoft 365 offline installer provides the full suite of desktop Office applications, not just lightweight web versions. Because it installs heavily integrated software, it distributes files across several system directories to manage operations, shortcuts, and updates.
Navigate to 'C:\Program Files\Microsoft Office' (for 64-bit installations) or 'C:\Program Files (x86)\Microsoft Office' (for 32-bit installations). This is where the actual executable files for full desktop applications like Word, Excel, and PowerPoint are stored.
Open 'C:\ProgramData\Microsoft'. This hidden directory typically holds application shortcuts, licensing data, and Click-to-Run configuration settings rather than the core application binaries.
Look for folders and files named ClickToRunPackageLocker, IntegratedOffice, and OfficeClickToRun. These are essential background services installed to handle seamless Office installations, telemetry, and automated software updates.
If you see an 'Office 15' folder in your directories, it is generally leftover installation data from an older version (specifically Office 2013) and does not contain active Microsoft 365 application files.
Try a Lightweight Alternative Without Heavy Background Services
If the Microsoft 365 offline installer is taking up too much disk space or its background Click-to-Run services are slowing down your PC, consider switching to WPS Office. It provides a single, compact installation package that gives you full access to powerful Word, Excel, and PowerPoint alternatives without cluttering your system.
- 1. Download the Installer: Visit the official WPS Office website and click 'Free Download' to get the lightweight installation package.
- 2. Run the Installation: Open the downloaded executable file, agree to the terms, and click 'Install' for a rapid, one-click setup.
- 3. Start Creating: Launch WPS Office from your desktop to instantly open and edit your existing documents, spreadsheets, and presentations.
Frequently Asked Questions
Can I choose which specific apps to install with the Microsoft 365 offline installer?
No, the standard Microsoft 365 offline installer installs the entire Office suite by default. Individual applications like Publisher or Access cannot be easily excluded during a standard consumer installation.
Why do I have an Office 15 folder if I just installed Microsoft 365?
The 'Office 15' folder is a remnant from Microsoft Office 2013. It often remains on your hard drive as leftover installation data or shared registry data if you previously had an older version installed on that computer.
What is the Office Click-to-Run service and can I disable it?
Click-to-Run is a Microsoft technology that supports the rapid installation and background updating of Office applications. Disabling it is highly discouraged, as it will prevent your Microsoft 365 apps from launching or receiving critical security updates.
Is it safe to delete the ClickToRunPackageLocker folder to save space?
No. Deleting the ClickToRunPackageLocker or any related OfficeClickToRun folders can corrupt your Microsoft 365 installation, leading to software crashes and the inability to repair or update the suite.
