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Symptoms

Internet Explorer 10 unexpectedly displays additional blank lines in text areas of an HTML document in the standards document mode.

Resolution

Update information

To resolve this issue, install the most recent cumulative security update for Internet Explorer. To do this, go to Microsoft Update.

For technical information about the most recent cumulative security update for Internet Explorer, go to the following Microsoft website:

http://www.microsoft.com/technet/security/current.aspxNote This update was first included in security update 2969262.

For more information about security update 2969262, click the following article number to view the article in the Microsoft Knowledge Base:

2969262 MS14-035: Cumulative Security Update for Internet Explorer: June 10, 2014

Registry information

After you install the cumulative security update, you can follow these steps to enable this security update:

Important
Follow the steps in this section carefully. Serious problems might occur if you modify the registry incorrectly. Before you modify it, back up the registry for restoration in case problems occur.

  1. Install the cumulative security update for Internet Explorer 10.

  2. Click Start, click Run, type regedit in the Open box, and then click OK.

  3. Locate and then select the following registry subkey:

    HKEY_CURRENT_USER\SOFTWARE\Microsoft\Internet Explorer\Main\FeatureControls

  4. On the Edit menu, point to New, and then click Key.

  5. Type FEATURE_CONVERT_ENTITY_CRLF_TO_LF_IN_TEXTAREA_KB2954771, and then press Enter.

  6. Select the subkey that was just created.

  7. On the Edit menu, point to New, and then click DWORD Value.

  8. Type iexplore.exe, and then press Enter.

  9. In the Details pane, right-click iexplore.exe, and then click Modify.

  10. In the Value data box, type 1, and then click OK.

  11. Exit Registry Editor.

  12. Restart Internet Explorer 10.

Workaround

To work around this issue, follow one of the following methods:

  • Upgrade to Internet Explorer 11.

  • Remove the entity reference of the carriage return character or the carriage return in the document.

More Information

Internet Explorer incorrectly parses and substitutes CRCR for the CRLF sequence. When rendering occurs, each CR is then displayed as an individual LF.

In HTML5 standards document mode, Internet Explorer 10 is expected to substitute a single LF character for each CRLR character sequence. In compliance with these same guidelines, entity references of the single CR character are expected to convert to single LF references.

Status

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

References

See the terminology that Microsoft uses to describe software updates.

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