Federated Experience Manager cannot be loaded if EXM is installed

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Description

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After trying to launch FXM on Sitecore XP instance with EXM module installed, the spinner animation remains displayed indefinitely and browser console shows the following error:
```
"Uncaught Failed to data-bind: ProgressIndicator TypeError: Cannot read property 'attributes' of undefined" sitecore-1.0.2.js:2902
```
Solution

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To resolve the issue, consider one of the following options:
- Upgrade Sitecore XP instance to 9.0 Update-1 or higher (recommended)
- For Sitecore XP 8.1 rev 160519 (Update-3):
  Download and install the hotfix Sitecore CMS 8.1 rev. 160519 Hotfix 119569-1.zip
- For Sitecore XP 8.2 rev 160729 (Initial Release):
  Download and install the hotfix SC Hotfix 360553-1 Sitecore.FXM 2.2.0.zip
Be aware that the hotfixes were built for specific Sitecore XP versions, and must not be installed on other Sitecore XP versions or in combination with other hotfixes that modify Sitecore assemblies. In case any other hotfixes have already been installed on specific Sitecore XP instance, send a request for compatibility check to Sitecore Support.

Applies to:

CMS 8.1 Update-3, 8.2 Initial Release

Fixed in:

CMS 8.2 Update-1

Publication date: January 17, 2020

Last updated: January 22, 2020

Reference number:

115466

Keywords:

EXM,
Federated Experience Manager