Currently there are more concurrent users in the Proving Grounds Play than our infrastructure allows.

This error message means that there are too many users currently accessing the Proving Grounds Play labs at this time. Please attempt to access the labs at a later time.

Host [hostName] could not be started/stopped/reverted. Retry later

There was an error while attempting to start/stop/revert your selected machine. Please wait and try again later.

Host [hostName] has been stopped as you exceeded the time.

The host has been stopped because you have exceeded your time limit. Please wait 24 hours to attempt this host again.

You have exceeded your daily limit.

You have exceeded the amount of time you have access to the Proving Grounds Play labs. Please try to access the labs at a later time.

We encountered an error while generating/resetting your VPN pack.

There was an error when providing your VPN pack to you for download. Please try again at a later time. 

The flag you submitted is not correct. 

The flag you submitted is not the correct flag for the machine.

We encountered an error while validating your flag.

There was an error when validating the flag for this submission. Please resubmit at a later time.

We encountered an error while submitting your feedback.

There was an error when submitting your feedback. Please resubmit at a later time.

We encountered an error while saving your note for [hostName].

There was an error when submitting your note for that particular machine. Please attempt to resubmit it at a later time.

We encountered an error while displaying the walkthrough for [hostName]

There was an error while attempting to display the walkthrough for your chosen machine. Please attempt to view the walkthrough again at a later time.

We encountered an error while displaying the hints for [hostName].

There was an error while attempting to open the hints for your chosen machine. Please attempt to view the hints at a later time.

Allow Essential Cookies to Authenticate.

This error message is due to how authentication works with the Proving Grounds platform. Cookies are required, and some browsers or operating systems, along with some extensions, may prevent you from logging in successfully. 

NOTE: As of macOS 10.13, cookies are blocked by default on Safari. You must whitelist offensive-security.com in System Preferences to allow you to use Proving Grounds in Safari. Please refer to Apple's support documentation for guidelines on how to do this. Please note that Offensive Security will not be able to assist you with this. If you have concerns, we recommend contacting Apple Support, or using a different browser such as Chrome or Firefox.