Update Manager fails to install with error: vCenter Server credentials could not be validated

Products

• VMware vCenter Server

Issue/Introduction

Symptoms:

After verifying that the vCenter Server credentials are correct and the user is mapped to the administrator role, you experience these symptoms:

• VMware vCenter Update Manager fails to install.
• You see the error:
  
  vCenter Server credentials could not be validated
  
  
• The %TEMP%/vminst.log file contains these entries:
  
  Process returned 255
  Error:: Other runtime error

Environment

VMware vCenter Update Manager 5.0.x
VMware vCenter Update Manager 5.1.x
VMware vCenter Update Manager 6.0.x
VMware vCenter Update Manager 5.5.x
VMware vCenter Update Manager 4.0.x
VMware vCenter Update Manager 4.1.x

Cause

This issue may occur when the %TEMP% and %TMP% environment variables have a space in the path.

Resolution

To resolve this issue, set the system %TEMP% and %TMP% environment variables to a path that contains no spaces and restart the Update Manager install wizard.

To check and modify the path:

1. Right-click My Computer and click Properties.
2. Click the Advanced tab.
3. Click Environment Variables.
4. Verify and ensure that the path string for Path, TEMP, and TMP variables do not have spaces.
   
   Note: You may have to log in again for the settings to take effect.

Alternatively, to resolve this issue, clear the contents of the %TEMP% folder for the user performing the installation and then restart the system and retry the installation.

Note: If your problem still exists after trying the steps in this article, file a support request with VMware Support and note this Knowledge Base article ID (2000321) in the problem description. For more information, see How to Submit a Support Request.

Additional Information

Update Manager がインストールに失敗する：エラー ”vCenter Server credentials could not be validated”