# Parallels Desktop Preferences

**prlsrvctl set**

The **prlsrvctl set** command is used to modify Parallels Desktop preferences. The available parameters and options are described below.

### Parameters

**--mem-limit** <**auto** | **size**>

Sets the total memory allocated to Parallels Desktop and its virtual machines. The **auto** option optimizes memory usage. The **size** option allows the user to set the memory size manually.

**-s, --min-security-level** <**low** | **normal** | **high**>

Specifies the minimum connection security level to connect to the server. Low - no transmitted data is encrypted. Normal - only the most important data is encrypted. High - all transmitted data is encrypted.

**-c**, **--cep** <**on** | **off**>

Enables or disables participation in the Customer Experience Program.

**--verbose-log** <**on** | **off**>

Enables or disables verbose logging.

**--log-rotation** <**on** | **off**>

Enables or disables automatic rotation of the Parallels Dispatcher Service and virtual machine log files.

**--allow-to-confirm \[--host-admin \<name>]**

Forces the prompt to enter admin credentials or a custom password if an operation requires it. If no operation requires a password, this option will be ignored. If an operation requires a password but this option is omitted, the operation will fail with a corresponding error.

To make an operation require a password, use the following options: **--require-pwd**, **--require-custom-pwd**, or **--lock-edit-settings**, as described below.

The **\[--host-admin \<name>]** option specifies the host administrator name if an administrator password is required to unlock the Parallels Desktop preferences for editing.

**--allow-attach-screenshots** <**on** | **off**>

Enables or disables attaching virtual machine and host screenshots to a problem report.

**--require-pwd** <**create-vm** | **add-vm** | **remove-vm** | **clone-vm**>:<**on** | **off**>

Require entering an administrator password to perform a corresponding action (create a VM, add a VM, etc.). Use **--allow-to-confirm** to make the system ask for username and password.

**--require-custom-pwd** <**create-vm** | **add-vm** | **remove-vm** | **clone-vm** | **edit-preferences**>:<**on** | **off**>

Require entering a custom password to perform a corresponding action. Use **--allow-to-confirm** to make the system ask for username and password. Other options are self-explanatory.

**--custom-pwd** \[**--custom-pwd-mode** <**on** | **off** | **change**>] \[**--replace-commands**]

Set, reset, or change the custom password for operations that require it. See the explanation of the parameters below.

**--custom-pwd-mode** <**on** | **off** | **change**> — set, reset, or change the custom password for operations which require it.

**--replace-commands** — specify this option to reset commands that are protected with the admin password. This means that when you enable a custom password, commands that require the admin password will now require a custom password. Commands that previously required a custom password will be discarded. The same logic is used when you switch back to the admin password (set **--custom-pwd-mode** to **off**). When you disable a custom password, commands that require it will now require the admin password. Commands that previously required the admin password will be discarded. This option is ignored if **--custom-pwd-mode** is set to **change**.

**--lock-edit-settings** <**on** | **off** \[**--host-admin** <*name*>]>

Locks or unlocks Parallels Desktop preferences for editing. The **--host-admin** parameter specifies the host administrator name if an administrator password is required to unlock Parallels Desktop preferences for editing.

**--external-dev-auto-connect** <**host** | **guest** | **ask**>

When a new external device is attached to the Mac, connect it to the host, or guest, or ask the user what to do.

**--hide-license-request-params** <**on** | **off**>

Hides the host name and username in requests to Parallels Licensing Server.


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