Office Settings & Configuration

Fix Excel Mouse Text Selection Not Extending to the End of a Cell

Partner Editor Sep 25, 2026 869 views

Question details

The user is experiencing an issue where dragging the mouse to select text inside an Excel cell no longer extends the highlight to the end of the text.

How to Fix Excel Mouse Text Selection Not Extending to the End of a Cell

Product: Microsoft Excel (Office LTSC Professional Plus 2021)
Device & OS: Windows
Scenario: Selecting text inside a specific cell using the mouse cursor.
Observed behavior: The mouse text selection stops working as expected and fails to highlight text to the end of the cell, a function that previously behaved similarly to the Ctrl+Shift+Down Arrow shortcut.

Before you start

Before proceeding, check if this issue happens in all workbooks or just a specific one, and verify if your keyboard shortcuts (like Ctrl+Shift+Down Arrow) still function correctly.

Solution 1Recommended

Verify Your Excel and Windows Version

Identify the exact build of your Office installation to determine if this is a known bug in a specific enterprise update.

Since this issue frequently affects specific enterprise editions like Office LTSC Professional Plus 2021, documenting your exact build is the first step toward finding a patch.

Open Account Settings

Launch Microsoft Excel, click on the 'File' tab in the top left corner, and select 'Account' from the left-hand menu.

Check Excel Version

Click the 'About Excel' button to view your exact edition and build number. Take a screenshot of this dialog box.

Check Windows Version

Press the Windows key, type 'winver', and press Enter. Take a screenshot of the Windows version window to keep as a reference for troubleshooting.

Keep Information Handy: You will need these screenshots and version numbers when requesting advanced support from Microsoft.

Solution 2

Seek Specialist Support on Microsoft Q&A

Escalate the issue to Microsoft specialists, as this behavior change often requires an official patch.

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1. Download the Installer: Visit the official WPS Office website and download the free software package.
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Frequently Asked Questions

Why does Ctrl+Shift+Down Arrow work but mouse selection fails?

Keyboard shortcuts interface directly with the core navigation commands of the spreadsheet application, while mouse drag selection relies on UI rendering and input drivers, which can sometimes break or behave unpredictably after a specific Office update.

Can I fix the mouse selection by resetting Excel options?

Sometimes checking for conflicting add-ins in 'File > Options > Add-ins' or running an Office Repair can help. However, if this is a known bug in Office LTSC Professional Plus 2021, it typically requires a software update from Microsoft to permanently resolve.

Does this selection issue affect WPS Office?

No, WPS Office utilizes an independent, highly optimized rendering engine. Standard mouse highlighting and selection within cells function normally and reliably in WPS Spreadsheets.

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