Update Manager Client is randomly disabled

Products: VMware Update Manager

Product Versions: VMware VirtualCenter 2.5.x

Symptoms:

• Update Manager Client is randomly disabled
  
• Update Manager Client is not working
  
• 
  
  The following error is generated:
  
  Your
  session with the VMware Update Manager is no longer valid. The VMware
  Update Manager Client plugin will be unloaded from the VI Client.

Resolution:

To prevent Update Manager from being randomly disabled, check if there is antivirus software running on the system.

Exclude the Update Manager download
repository from antivirus scanning. For more information about
excluding items from antivirus scanning, contact your antivirus
software vendor.

Note: If your problem
still exists after trying the steps in this article, please file a
support request with VMware Support and note this KB Article ID in the
problem description. For more information, see How to Submit a Support Request.

Via: VMware KB >>

VMware, Update Manager, VirtualCenter