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Salesforce for Outlook - Side Panel fails to load in Windows 8 or 10

Knowledge Article Number 000193421
Description ISSUE

Salesforce for Outlook Side panel fails to load after installing Salesforce for Outlook in Windows 8, 8.1, or Windows 10 machines

Possible Cause
This could be caused by any or all of the following reasons:

1- User not having access to the Program Files folder (Only applies to SFO version 2.4.2 and earlier or installations of SFO 2.8 and later has been performed the "Everyone who logs in to this computer" option)

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2- The .NET "Windows Communication Foundation Non-HTTP Activation" feature is not installed on the machine

3- Previous versions of SFO (Version 2.4.2 and earlier) have been uninstalled by the end user who does not have local admin rights on the computer as well as all the pre-requisites (Such as VSTO PIA etc) or the SFO version 2.5.x and newer have been installed by system, admin user or using the Right click | Run as Administrator option
STEP 1 - Adjusting UAC
Make sure User Account Control (UAC) is set to NEVER NOTIFY and restart and then try to reproduce the issue. For more information on how to set UAC to Never Notify See Knowledge Article # 000019209

If lowering UAC does not fix the issue move to STEP 2 

STEP 2 - Make sure Side Panel is not hidden
See Knowledge Article 000186485 for more details

STEP 3 - Uninstalling SFO
First step would be completely uninstall Salesforce for Outlook from the Control Panel, see our Help and Training for more information

STEP 4 - Setting the permission on Programs Files folder

** This step applies only to SFO version 2.4.2 and lower. If you have installed SFO 2.5 and above version skip this step please

By default, Windows 8 imposes strict access permissions on system-wide locations, folders and files such as Program Files folder. You need to add the local users group or Authenticated Users and grant at least modify permission to the Salesforce folder located in Program Files.

To do this, navigate to C:\Program Files (x86)\ or C:\Program Files\ (Depending on your Office and Windows bitness)

Right click on folder and click on Properties and then click on the Security tab

Click on Edit, locate the username you want to change the permission (If you dont see your username or Authenticated users, simply click on Add and type in the name and click on Find. You can also type in Authenticated user and click on Find and add. This would set the permission for all users who would login to the machine)
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Once computer is restarted, install SFO and try to reproduce the issue.

Next you need to select the user and check the box for Modify and click on okay. Close all folders and restart your machine

STEP 5 - Installing .NET Windows Communication Foundation Non-HTTP Activation
If you still experiencing issues with the Side Panel being slow or inconsistent or its not loading, you can try installing the Windows Communication Foundation Non-HTTP Activation Components for .NET 3.5 or 4.5  and then restart your computer

To do this,
  1. Click the Start button, and then click Control Panel.
  2. Click Programs, and then click Programs and Features.
  3. On the Tasks menu, click Turn Windows features on or off.
  4. Find the .NET Framework 3.5 node, select and then expand it.
  5. Select the Windows Communication Foundation Non-HTTP Activation Component box and save the setting.

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