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P4 CLI Reference | 2025.1

# P4USEBROWSER

Determines whether the client's browser opens automatically when using p4 login with an authentication Extension.

## Usage notes

Used by Client? | Used by Server? | Command-Line Alternative | Can be set in P4CONFIG file?
--- | --- | --- | ---
Yes | No | None | Yes

## Value if not explicitly set

`true`, which allows the client's browser to open automatically when using p4 login with an authentication Extension, such as the one documented at GitHub Perforce page.

## Example

A test might be to set `P4USEBROWSER=false` before invoking `p4 login`, then performing a verification before setting the variable back to `true`.

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