vSphere Web Client 6.0 displays an internal error after upgrading to vSphere 6.0

Products

• VMware
• VMware vCenter Server

Issue/Introduction

After upgrading to vSphere 6.0, you experience these symptoms:

• The vSphere Web Client 6.0 displays an internal error.
• When logging in to the vSphere Web Client 6.0, you see the error:

An internal error has occurred - Unable to load resource module from /phonehome/locales/ph-admin-ui-en_US.swf.
An internal error has occurred - Unable to load resource module from /webCLientUI/locales/WebClientUI-en_US.swf
Reloading the client is recommended, so as to clear any problems left by this error

Environment

• VMware vCenter Server 6.0.x
• VMware vCenter Server Appliance 6.0.x
• VMware vCenter Support Assistant 5.5.x

Cause

This issue happens when installed plug-ins are not supported in the vSphere 6.0 environment. Following are two scenarios:

• vRealize Operations Manager versions prior to 5.8.5 are not supported in the vSphere 6.0 environment.
• vCenter Support Assistant 5.5 is not supported in the vSphere 6.0 environment.
  
  For more information, see the VMware Product Interoperability Matrixes.
  
  Note: This issue could also occur due to any third party plug-ins installed.

Resolution

• In vRealize Operations Manager 5.8.5 or versions

Upgrade vRealize Operations Manager to 5.8.5 or later. 

• In vCenter Support Assistant

Disable the plug-in through the Client Plug-In manager within the vSphere Web Client or upgrade to a compatible version.
 

Note: Consult third party documentation for compatibility of plug-ins with vSphere 6.0.

 

To disable the plug-in through the Client Plug-In manager within the vSphere Web Client:

1. Log in to the vSphere Web Client as an vCenter Server Administrative user.
2. When the error appears, click No.
3. Navigate to Administration > Client Plug-Ins.
4. Locate the plug-in causing the issue.
   
   For example, for vCenter support assistant, select VMware vCenter Support Assistant WebClientPluginPackage.
5. Right-click and click Disable.
6. Click Yes on the pop-up box for disabling the plug-in.

Additional Information

Cannot remove or disable unwanted plug-ins from vCenter Server and vCenter Server Appliance