When attempting to start an exam with BrowserGuard, you may see a message stating you have '-1' tabs open and you are unable to proceed past this message. This error is related to the permissions given to your Chrome Extension.
Please follow the below instructions to resolve this issue and proceed with your exam.
1) Right-click on the Honorlock extension in the top right of Chrome and select This can read and change site data.
2) Make sure that this setting is set to 'On All Sites'
3) Once this is done, please refresh the exam page and relaunch proctoring.