Do not download "vSphere Client 5.5" from third-party crack sites or softonic clones. These often contain malware, keyloggers, or corrupted MSI files.
Avoid vSphere Client 5.5 on Windows 10. If you absolutely must manage a vSphere 5.5 environment from Windows 10, use the web client or a Windows 7/8.1 VM as a jumpbox. vmware vsphere client 5.5 download windows 10 64 bit
If the installation fails due to driver issues, manually deleting hcmon.sys from C:\Windows\System32\drivers and rebooting before a retry often fixes the conflict. Do not download "vSphere Client 5
Users who attempt to install the original vSphere Client 5.5 on Windows 10 encounter multiple issues: vmware vsphere client 5.5 download windows 10 64 bit