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This knowledgebase contains articles and guides to help you get the most out of your Doceri software. If you can't find the answers you are looking for in the articles below, please submit a support request and we will be glad to help you. Why won't Doceri record or control my Mac running macOS Catalina (10.15)With the Mojave and Catalina versions of macOS, Apple has added new security settings that need to be set so they explicitly allow Doceri to control the computer. Firstly, Apple will attempt to prevent the installation of any software that was not downloaded from their store, including Doceri Desktop. When you first attempt to install Doceri Desktop, you will likely see the following error message: "'Doceri Desktop' can't be opened because Apple cannot check it for malicious software." (See MacDoceriCannotBeOpened.PNG attachment at end of article for an image of this error dialog.) Instead of double-clicking Doceri Desktop, you will need to control-click (hold the Control button and click on Doceri Desktop) and select "Open" from the menu that pops up. You will then get an error message that looks almost the same, but this time, there will be an "Open anyway" button that lets you launch Doceri Desktop. As soon as you've done this one time, Doceri Desktop will launch normally from a double-click every time after that. Again, this is Apple imposing an extra headache on users who want to run non-App Store software and not anything that we have control over. During the rest of the installation process, you may be prompted to allow Doceri to control your computer, to control other apps, or to record your screen (as detailed below). Each of these permissions is necessary for the core features of Doceri to work at all: if you Deny any of them, Doceri will not function properly until you go into System Preferences and adjust those settings in the Security & Privacy section, which often turns out not to be easy after the fact. If you upgraded to macOS Catalina from a version prior to Mojave (10.14) or are installing Doceri Desktop for the first time on Catalina, please see Why won't Doceri control my Mac running Mojave or later? for details about changing the control settings just mentioned, then return to this answer. If you upgraded to Catalina from Mojave, then the first time you connect your tablet to Doceri Desktop, you should be asked if you would like to allow Doceri Desktop to record this computer’s screen. 
Granting this permission is necessary to see anything other than the computer's desktop wallpaper in your Doceri app, and to have any meaningful control over the Mac from Doceri. If you choose Deny at this point, virtually all function of Doceri Desktop will be blocked. If you Deny or skip this step when it first appears, there may be no easy way to change your mind later. Therefore, select the "Open System Preferences" button to be taken straight to the correct setting, which is at: System Preferences-->Security & Privacy-->Privacy-->Screen Recording 
Click the lock in the lower left to enable modifications—you may need to enter the administrator password for this to take effect. Then check the empty box next to Doceri Desktop to allow display, control, and recording of the Mac screen on the tablet over Doceri. The Mac should then display a pop-up message stating that Doceri Desktop won't be able to record the screen until you quit and restart. Selecting Deny will uncheck the box above, and again block most Doceri Desktop function. Instead, select Quit, and then relaunch Doceri Desktop and reconnect from the Doceri app. Attachments:
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