How to Get Rid of HTTP Error 400 Bad Request

Written by susan reynolds
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How to Get Rid of HTTP Error 400 Bad Request
Microsoft error messages can be resolved. (Hemera Technologies/AbleStock.com/Getty Images)

The "HTTP Error 400 Bad Request" message pops up if you're using Internet Explorer 9 and trying to receive instant messages. It usually happens on Exchange Server 2010 Service Pack 1 platforms that also run Outlook Web Access. Microsoft has a solution for this occurrence in the form of a free update. It's important to always download and install the latest Microsoft updates for your system to avoid these error messages in the future.

Skill level:
Easy

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Instructions

  1. 1

    Go to the Microsoft Download Center (download.Microsoft.com) website.

  2. 2

    Type "KB2529939" into the search box and press "Enter." The site loads a link called "Update Rollup 3-v3 for Exchange Server 2010 Service Pack 1." Click on it.

  3. 3

    Click the red "Download" button.

  4. 4

    Click "Save" on the box that pops up.

  5. 5

    Wait for the program to download. It may take up to one minute.

  6. 6

    Double-click on the program icon to start the installation process.

  7. 7

    Click "Open" and follow the instructions for installing it.

  8. 8

    Reboot your PC after you install Rollup 3.

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