# Microsoft Removing Word Similarity Checker and Changing Text

**Published:** 2026-09-08T08:02:10.594Z  
**Topic:** Microsoft  
**Sentiment:** neutral  
**Publisher:** TrendWatcher — https://www.trendwatcher.in/article/be2562a4-ea7e-4472-abca-98f6e8a65510

Microsoft will retire the Word Similarity Checker on October 3, 2026, and shift Text Predictions to an opt-in model, impacting academic and office workflows.

Microsoft will discontinue the Similarity Checker in Word on October 3, 2026, forcing students, educators, and organizations to find alternative tools for source-matching and originality verification [2]. The move comes alongside a broader shift in how Microsoft handles AI-driven writing assistance, including moving Text Predictions to an opt-in feature across Word and Outlook [2].

| At a glance | |
|---|---|
| Feature Retirement | Similarity Checker |
| Retirement Date | October 3, 2026 |
| Text Predictions | Moving to opt-in |
| Primary Impact | Academic and editorial workflows |

## Changes to writing and review tools
The Similarity Checker, which has been part of Word for six years, serves as a checkpoint for users to identify passages that match online content [2]. While the tool provides a similarity percentage and highlights potential matches, Microsoft has long maintained that these results are not a definitive declaration of plagiarism, as they include properly cited quotes and common phrases [2]. Following the October 3, 2026, retirement, users will no longer have access to this integrated source-matching capability, requiring institutions to adopt third-party services or revise their internal review processes [2].

Simultaneously, Microsoft is altering the behavior of Text Predictions, the feature that anticipates user input in Word and Outlook [2]. Unlike the Similarity Checker, this feature is not being removed, but it will transition to an opt-in model [2]. Users who prefer to have the software suggest upcoming words or phrases will need to manually enable the feature in their settings as the update rolls out [2]. Microsoft has not provided a specific timeline for the rollout, noting that further details will be communicated through Microsoft 365 administration channels [2].

## Broader shifts in AI access
These updates follow a period of significant restructuring for Microsoft’s AI-integrated office tools. Earlier this year, on April 15, 2026, the company removed Copilot Chat from Word, Excel, PowerPoint, and OneNote for business users lacking a paid Microsoft 365 Copilot license [4]. For large organizations with more than 2,000 seats, the removal was absolute, while smaller firms saw their access downgraded to a throttled "Standard Access" tier [4]. 

The distinction between these tools remains a point of emphasis for the company. Microsoft has explicitly warned users that Copilot should not be treated as a replacement for formal plagiarism or originality checks, even as it continues to refine its AI-assisted writing suite [2]. While Copilot remains available for Outlook and via standalone web interfaces, the removal of the Similarity Checker marks a narrowing of the native, automated compliance tools available directly within the Word application [2, 4].

## What to watch
*   **October 3, 2026:** The official retirement date for the Similarity Checker, after which the feature will be removed from all Word versions [2].
*   **Microsoft 365 Administration Channels:** The primary source for updates regarding the rollout schedule for the opt-in Text Predictions change [2].
*   **Institutional Workflow Adjustments:** Monitoring how academic and editorial organizations transition to third-party plagiarism detection services following the loss of the native Word tool [2].

The retirement of the Similarity Checker leaves a gap in integrated academic workflows that Microsoft has not yet signaled it intends to fill. Whether the company introduces a more specialized, paid-tier replacement or leaves the market entirely to third-party developers remains the primary open question for institutional users.

## Sources
1. Theregister — [Microsoft will stop finishing your sentences in Word and Outlook](https://www.theregister.com/ai-and-ml/2026/09/02/microsoft-will-stop-finishing-your-sentences-in-word-and-outlook/5293860)
2. Newsbreak — [Microsoft Is Removing a Useful Word Tool: What Users Should ...](https://www.newsbreak.com/techrepublic-320365869/4871804704109-microsoft-is-removing-a-useful-word-tool-what-users-should-know)
3. Windowsreport — [Microsoft Turns Off Text Predictions by Default in Word and ...](https://windowsreport.com/microsoft-turns-off-text-predictions-by-default-in-word-and-outlook/)
4. Findskill — [Copilot Removed From Word: $30/Month or Free Alternatives](https://findskill.ai/blog/copilot-chat-removed-what-changed/)

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Cite as: TrendWatcher, "Microsoft Removing Word Similarity Checker and Changing Text", https://www.trendwatcher.in/article/be2562a4-ea7e-4472-abca-98f6e8a65510