Spell Checker does not recognize misspelled words in Word 2010
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Symptom 1
Spell Checker does not recognize misspelled words in Word 2010
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Symptom 2
When you click the Spelling & Grammar button in the Proofing group on the Review tab in Word 2010, you receive one of the
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following messages:
The spelling and grammar check is complete.
Proofing Tools are not installed for default language, try re-installing proofing tools.
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Cause
This may occur for any one of the following reasons:
Proofing tools are not installed.
The Speller EN-US add-in is disabled.
The Do not check spelling or grammar check box is selected.
Another language is set as default.
The following subkey exists in the registry:
HKEY_CURRENT_USER//Software//Microsoft//Shared Tools//ProofingTools//1.0//Override//en-US

RESOLUTION:
To install the proofing tools, follow these steps:
Exit all programs.
Click Start, and then click Control Panel.
Follow the appropriate step for your operating system:
In Windows 7, click Uninstall a program under Programs.
In Windows Vista, double-click Programs and Features.
In earlier versions of Windows, double-click Add or Remove Programs.
Click Microsoft Office Edition, and then click Change.

Information iconNote In this step and in the following step, the placeholder Edition represents the Microsoft Office edition that is installed on the computer.

In the Microsoft Office Edition dialog box, click Add or Remove Features, and then click Continue.

Expand Office Shared Features, click the icon to the left of Proofing Tools, and then click Run all from My Computer.
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To enable the add-in, follow these steps:
Click the File tab, and then click Options.
On the left, click Add-Ins.
At the bottom of the Word Options dialog box, click the drop-down arrow under Manage, change the selection from COM Add-ins to Disabled items, and then click Go.
At the bottom of the Word Options dialog box, click the drop-down arrow under Manage, change the selection from COM Add-ins to Disabled items, and then click Go.

In the Disabled Items dialog box, check whether Speller EN-US (nlsdata0009.dll) is available in the Select the ones you which to re-enable box.
If Speller EN-US (nlsdata0009.dll) is listed, click it, and then click Enable.
Click Close, and then click OK.

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To enable spell check as you type, follow these steps:
Click the File tab, and then click Options.
In the Word Options dialog box, click Proofing.
Make sure that the Check spelling as you type check box is selected in the When correcting spelling and grammar in Word section.
Make sure that the Check spelling as you type check box is selected in the When correcting spelling and grammar in Word section.

Make sure that all check boxes are cleared in the Exception for section.
Make sure that all check boxes are cleared in the Exception for section.

Click OK.

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Important This article contains information about how to modify the registry. Make sure that you back up the registry before you modify it.
To fix this problem yourself, follow these steps:
Click Start, and then click Run.
In the Run box, type regedit, and then press Enter.
Locate and then right-click the following registry subkey:
HKEY_CURRENT_USER//Software//Microsoft//Shared Tools//Proofing Tools//1.0//Override
Click Delete.
Exit Registry Editor.
Exit and then restart Word.

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