The Horizon PCoIP ADMX template file contains group policy settings that configure clipboard settings for copy and paste and drag and drop operations.

All of these settings are in the Computer Configuration > Policies > Administrative Templates > PCoIP Session Variables > Overridable Administrator Defaults folder in the Group Policy Management Editor.

All of these settings are also in the User Configuration > Policies > Administrative Templates > PCoIP Session Variables > Not Overridable Administrator Settings folder in the Group Policy Management Editor.

Table 1. PCoIP Clipboard Policy Settings
Setting Description
Configure clipboard audit Specifies whether the clipboard audit feature is enabled on the agent machine. When this setting is enabled, the options are as follows:
  • Disabled in both directions - information about clipboard data is not recorded.
  • Enabled client to server only - information about clipboard data that is copied from the client to machine to the agent machine is recorded in an event log on the agent machine.
  • Enabled in both directions - information about clipboard data that is copied from the client to machine to the agent machine, and from the agent machine to the client machine, is recorded in an event log on the agent machine.
  • Enabled server to client only - information about clipboard data that is copied from the agent machine to the client machine is recorded in an event log on the agent machine.

When this setting is disabled or not configured, the default value is Disabled in both directions.

You can use the Windows event viewer on the agent machine to view the event log. The log name is VMware Horizon RX Audit. To view the event log in a centralized location, you can configure VMware Log Insight or Windows Event Collector.

Note: Only the Windows client supports agent machine to client machine clipboard auditing.
Configure clipboard memory size on server Specifies the server's clipboard memory size value in bytes or kilobytes, as selected. The memory size is in kilobytes if it is not configured.

The client also has a value for the clipboard memory size, which is always in kilobytes. After the session is set up, the server sends its clipboard memory size value to the client. The effective clipboard memory size value is the lesser of the client and server clipboard memory size values.

A large clipboard memory size can negatively affect performance, depending on your network. VMware recommends that you do not set the clipboard memory size to a value greater than 16 MB.

Note: The maximum clipboard memory size for copy and paste operations is 65,535 KB. Because this limit includes metadata and formatting data, the actual data size must be somewhat less than 65,535 KB. To transfer larger amounts of data, use the client drive redirection feature.
Configure clipboard redirection Determines the direction in which clipboard redirection is allowed. You can select one of these values:
  • Enabled client to agent only
  • Disabled in both directions
  • Enabled in both directions
  • Enabled agent to client only

Clipboard redirection is implemented as a virtual channel. If virtual channels are disabled, clipboard redirection does not function.

This setting applies to Horizon Agent only.

When this setting is disabled or not configured, the default value is Enabled client to agent only.

Configure drag and drop direction

Specifies the direction in which drag and drop is allowed. When enabled, the options are as follows:

  • Disabled in both directions
  • Enabled client to agent only. Allows drag and drop only from the client system to the agent.
  • Enabled agent to client only. Allows drag and drop only from the agent to the client system.
  • Enabled in both directions

When this setting is disabled or not configured, the default value is Enabled client to agent only.

This setting applies to the agent only.

Configure drag and drop formats Determines which drag and drop direction (Disabled in both directions, Enabled agent to client only, Enabled client to agent only, or Enabled in both directions) is allowed for each data format. When this setting is enabled, the options are as follows:
  • Option for file format
  • Option for text format
  • Option for Rich Text format
  • Option for Image format
  • Option for HTML format
  • Option for File Content format

When this setting is disabled or not configured, the default value for all formats is Enabled in both directions.

This setting applies to the agent only.

Configure drag and drop size threshold Determines the size limit for dragging common data types other than files and folders.

When this setting is enabled, select the unit of the drag data size from the Choose the unit of the drag and drop size drop-down menu. You can select Bytes, Kilobytes, or Megabytes. Select or enter the drag data size in the Drag and drop size threshold text box. The effective data range for each unit is as follows:

  • Bytes: 1 to 1023
  • Kilobytes: 1 to 1023
  • Megabytes: 1 to 16 (the maximum data size to drag and drop is 16 megabytes)

When this setting is disabled or not configured, a default threshold of 1 megabytes is set.

This setting applies to the agent only.

Filter text out of the incoming clipboard data Specifies whether textual data is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Rich Text Format data out of the incoming clipboard data Specifies whether Rich Text Format data is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter images out of the incoming clipboard data Specifies whether image data is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Office text data out of the incoming clipboard data Specifies whether Microsoft Office text format data (BIFF12 format) is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Chart and Smart Art data out of the incoming clipboard data Specifies whether Microsoft Office Chart and Smart Art data (Art::GVML ClipFormat) is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Text Effects data out of the incoming clipboard data Specifies whether Microsoft Office text effects data (HTML Format) is filtered out of the clipboard data coming from the client to the agent. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter text out of the outgoing clipboard data Specifies whether textual data is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Rich Text Format data out of the outgoing clipboard data Specifies whether Rich Text Format data is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter images out of the outgoing clipboard data Specifies whether image data is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Office text data out of the outgoing clipboard data Specifies whether Microsoft Office text format data (BIFF12 format) is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Chart and Smart Art data out of the outgoing clipboard data Specifies whether Microsoft Office Chart and Smart Art data (Art::GVML ClipFormat) is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Filter Microsoft Text Effects data out of the outgoing clipboard data Specifies whether Microsoft Office text effects data (HTML Format) is filtered out of the clipboard data sent from the agent to the client. When this setting is enabled and the check box is selected, the data is filtered out. When this setting is disabled or not configured, the data is allowed.
Whether block clipboard redirection to client side when client doesn't support audit Specifies whether to block clipboard redirection to clients that do not support the clipboard audit feature.

When this setting is enabled, you must select one of the following values.

  • Block - blocks agent-to-client clipboard redirection if the clipboard audit feature is supported on the agent machine but is not supported on the client machine.
  • Passthrough - allows agent-to-client clipboard redirection if the clipboard audit feature is supported on the agent machine but is not supported on the client machine.

When this setting is disabled or not configured, the default value is Block.

You must enable the Configure clipboard audit group policy setting for this setting to take effect.