Office for Mac Issues

How to Fix Slow First Startup of Microsoft Word on iMac

Ayan Masood Sep 25, 2026 871 views

Question details

Microsoft Word takes several minutes to open on the initial launch on an iMac, though subsequent launches are fast.

How to Fix Slow First Startup of Microsoft Word on an iMac

Product: Microsoft Word for Mac
Device & OS: macOS
Scenario: Launching Microsoft Word for the first time after booting or a long idle period.
Observed behavior: The application takes an unusually long time to open during the first startup, but launches almost instantly upon closing and reopening.

Before you start

Before troubleshooting, ensure your macOS and Microsoft Word are updated to the latest versions, and back up any important data or custom templates before clearing application cache folders.

Solution 1Recommended

Clear Word Container Cache Folders

Removing cached data can resolve slow startup issues caused by corrupted or bloated temporary files.

macOS stores application support files and caches in specific container folders. Over time, these files can become bloated, causing significant delays during the initial launch. Moving this folder forces Word to rebuild a clean cache.

Close Microsoft Word

Ensure Microsoft Word is completely closed. Right-click its icon in the Dock and select Quit.

Access the Library Folder

Open Finder. Click on the Go menu at the top, hold down the Option key to reveal the hidden Library option, and click it.

Locate the Containers Folder

Navigate to the Containers folder. Look for a folder named com.microsoft.Word or Microsoft Word (depending on your macOS version).

Move Folder to Desktop

Drag the com.microsoft.Word folder to your Desktop. This acts as a backup.

Restart Word

Launch Microsoft Word again. The first launch might take a moment to rebuild the folder, but subsequent initial launches after a reboot should be much faster.

Temporary Relief: This may provide temporary relief. If the startup issue returns after a few days, further investigation into third-party add-ins or firewalls may be needed.

Solution 2

Disable Third-Party Word Add-ins

Incompatible or outdated add-ins can significantly increase launch times as they must load alongside the application.

Solution 3

Test in macOS Safe Mode and Check Resource Usage

Safe Mode isolates the issue from background startup programs, while Activity Monitor helps check for memory bottlenecks.

Free Microsoft Office alternative

Switch to WPS Office for a Faster Experience on Mac

If Microsoft Word continues to lag on your iMac, consider switching to WPS Office. It's a lightweight, fast, and completely free alternative that launches instantly and seamlessly handles your documents.

1. Download the Installer: Visit the official WPS website and download the macOS version.
2. Install the Application: Open the downloaded DMG file and drag WPS Office into your Applications folder.
3. Open Your Documents Fast: Launch WPS Office and open your Word documents with lightning-fast speed and full formatting compatibility.

Lightweight architecture ensures instant startup times on macOSHighly compatible with Microsoft Word (.docx), Excel, and PowerPoint formatsAll-in-one tabbed interface for a streamlined workflowCompletely free to use with familiar features and tools

microsoft office alternative - wps office

Frequently Asked Questions

Why does Word open quickly the second time but slow the first time?

macOS keeps application data in the system RAM after the first launch (a process known as app caching). Because the data is already loaded in memory, reopening the app happens almost instantly.

Will moving the Word container folder delete my documents?

No. The com.microsoft.Word container folder only holds application preferences, temporary caches, and specific settings. Your saved documents are safely stored in your regular Finder folders and will remain intact.

Could my antivirus software be causing the slow startup on my iMac?

Yes. Third-party security software, antivirus programs, or strict firewalls often heavily scan applications and their network connections during the initial launch, which can significantly delay the startup process.

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