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Knowledge Base

LGTO sync error interrupts remote virtual machine connectivity in VMware ESX 3.x/4.x and VMware ESXi 4.x (1004809)

Last Updated: 3/20/2024Categories: TroubleshootingTotal Views: 19027Language:
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Symptoms

You see an LGTO sync error messages appear on your system.

You see the LGTO syn error message in the Windows Event viewer.

Network connectivity to the virtual machine fails or is interrupted.

Remote Desktop Connection (RDP) connection fails.

Cause

This issue occurs due to the LGTO sync service that is part of the VMware tools.

Resolution

To resolve this issue, you must disable the LGTO Sync service.

Note: The LGTO Sync service is not applicable with Windows 64-bit.

To disable the LGTO Sync service:

Open the Windows Device Manager.

Click View > Show Hidden Devices.

Click to expand Non-Plug and Play Drivers.

Find the Sync Driver device. To verify that you have found the correct device, edit the Properties and click the Driver tab.

The Driver tab shows information similar to:

Service name: LGTO_Sync
Display name: Sync Driver

After you have located the correct device, click Cancel to go return to the Device manager.

Right-click the device and click Disable.

Reboot the virtual machine.

Related Information

The Sync driver is responsible for quiescing the drive before a snapshot occurs (which happens before the backup).

If your server does not run a database (SQL, Exchange, Oracle, AD), you can implement the LGTO SYNC driver in VMware tools to quiesce the file system. This means your snapshot will contain as much as it can, and no half-open file writes.

Caution: If your server does run a database, do not use the LGTO SYNC driver unless you plan on stopping the database services using the pre-freeze script and starting them again using post-thaw script. If you do not, database services may fail during the LGTO SYNC freeze operation.
LGTO 同步错误会中断 VMware ESX 3.x/4.x 和 VMware ESXi 4.x 中的远程虚拟机连接

Detectable by VMware SkylineTM

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Attachments

Additional Resources

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End Of General Availability of the Free vSphere Hypervisor (ESXi 7.x and 8.x) (2107518)

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VMware VirtualCenter Server 服务启动后失败并出现日志错误：无法添加默认权限: 权限已存在 (1008114)

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Related Products:

VMware vSphere ESXi

VMware ESX Server

Related Versions:

VMware ESXi 4.0.x Installable

VMware ESXi 4.0.x Embedded

VMware ESX Server 3.5.x

VMware ESX Server 3.0.x

VMware ESX 4.0.x

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