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Why Does Compatibility Mode Not Work in

Knowledge Article Number 000205436
Description What is Compatibility Mode in Internet Explorer?
Compatibility mode, a.k.a Compatibility View, is a mechanism by which software emulates an older version of software in order to allow obsolete software or files to remain compatible with the computer's newer hardware or software.  Prior versions of Internet Explorer called this "Compatibility Mode," and it was renamed "Compatibility View" in Internet Explorer versions 10 and 11

Salesforce does not support Compatibility Mode / Compatibility View nor any of the following in Internet Explorer:
  • Modifications to the Browser Mode, Document Mode, or Agent String.
  • Using the  "X-UA-Compatible" tag in any of the Apex or HTML headers for the page to load. 
  • Modification to the emulation settings in IE 11 beyond orientation and resolution. 
Resolution Why Does Not Support Compatibility Mode/View? platform does not support Compatibility Mode/ View because it would add substantially to our test matrix and further complicate a lot of the browser specific code, making it more difficult to maintain.

  1. Re-design your Visualforce pages so that they can run in regular Internet Explorer mode.
  2. Contact Microsoft to see if they can provide a fix. 

How do I disable Compatibility Mode in Internet Explorer?

1. Go to Tools (Menu Bar) on Internet Explorer 8, 9, 10, or 11. Alternatively, you can click on the gear icon in the top right.
2. Click on Compatibility View Settings. Click Remove if is added to compatibility view.
3. Uncheck "Include updated websites list from Microsoft".
4. Uncheck "Display all websites in compatibility view" if it is checked.
5. Click on Close and then refresh page (F5, Ctrl R, or Refresh icon to the right of the address bar)

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