Error "Disk space has -1 MB free space. Installation require 125 MB" when upgrading the manager even when there is plenty of disk space

Products

• Data Center Security Server Advanced

Issue/Introduction

At the beginning of the Data center Security Server Advanced (DCS) manager upgrade this error appears even though there is plenty of Disk space available on the installation drive

Cause

UAC is enabled on the machine

Resolution

Before launching the Server.exe make sure that UAC is not enabled in the registry:

• Click Start, click Run, type regedit, and then click Enter.
• If prompted to enter your credentials, click on Yes to continue. Navigate to the following registry subkey:
  HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System
• ​In the details pane (Right Pane), locate the EnableLUA key (REG_DWORD type). Double click to Modify. In the Value data box, type 0 (zero), and then click OK.
• Exit Registry Editor, and then restart the computer.

Additional Information

Reference Microsoft article: User Account Control Group Policy and registry key settings