Jamf access for Office 365 - Skype For Business Mic Disabled

andys2020
New Contributor

I’ve found a slight incompatibility with Skype for Business and the particular version of macOS I’m using. The symptoms are that Skype never requests permission to use your MacBook’s microphone and so it’s permanently muted for all participants in a call. Has anyone else seen this problem? and have a resolution.

3 REPLIES 3

davidi4
New Contributor III

We've seen this issue, and the fix was to walk the user through the privacy settings to manually give Skype access to the microphone and camera. PPPC policies may allow automating this? Haven't seen this affect anyone else on a call, however.

andys2020
New Contributor

Resolved thank you 👍

shaquir
Contributor III

I created this script to reset the TCC Camera and microphone setting for users without disabling SIP. Within my environment, I setup an EA to check for a logged in User's disabled TCC values and parse for Skype for Business's bundleID. I then run the tccutil reset Microphone or Camera command depending on which value was disabled. With Catalina you can reset individual TCC camera or microphone bundleID's (So just Skype for Business will ask for re-approval). Please note, the only way (I've found) to get this to work on Mojave is by reseting the TCC Camera or Microphone settings for all apps.

#!/bin/bash
#Shaquir Tannis 3-19-2020
#This script is created to report and reset disabled Camera or Microphone TCC Security and Privacy access for Skype for Business within a logged in user's TCC preferences.  If the Camera or Microphone option is disabled it will reset the TCC value to allow a reprompt for a user's Camera or microphone access.  SIP can stay enabled 
#### Please be aware that for machines running Mojave and below resetting a single Application's TCC bundle ids does not work properly so the entire microphone or camera TCC settings will be reset.  If you have multiple apps that require TCC, please consider the neccessity of this script.  Use at your own risk####

# This script can only succesfully reset the camera or microphone's TCC value with a logged in User
# Get current logged in user
loggedInUser=$(/bin/ls -l /dev/console | /usr/bin/awk '{ print $3 }')

# Get current logged in user's home directory
[[ "$loggedInUser" ]] && loggedInUser_home="$(/usr/bin/dscl /Local/Default read /Users/"$loggedInUser" NFSHomeDirectory | /usr/bin/awk '{print $2}')"

APPNAME="Skype for Business"

#You can only reset single app bundle id's starting with Catalina. All TCC Camera and Microphone approval values will need to be reset for OS's below Catalina
bundleID="com.microsoft.SkypeForBusiness"

#Check Os Version if Catalina - Add bundle id for app
versionCheck="$( sw_vers -productVersion | cut -d . -f 2 )"

if [[ "$versionCheck" -ge "15" ]];
then
    echo "macOS version is 10.$versionCheck so bundleID will be set"
function resetMicrophone(){
        su - $(stat -f%Su /dev/console) -c "/usr/bin/tccutil reset Microphone $bundleID"
}
function resetCamera(){
        su - $(stat -f%Su /dev/console) -c "/usr/bin/tccutil reset Camera $bundleID"
}
else
    echo "macOS version is 10.$versionCheck so all TCC Microphone or Camera values will be reset"
function resetMicrophone(){
        su - $(stat -f%Su /dev/console) -c "/usr/bin/tccutil reset Microphone"
}
function resetCamera(){
        su - $(stat -f%Su /dev/console) -c "/usr/bin/tccutil reset Camera"
}
fi

# Tests whether the app to be updated is closed - returns 1 if closed, or 0 if running
# If App is opened run command to prompt User to close
function is_app_running()
{
    #If app is running call on AppleScript
    /usr/bin/pgrep -q "$APPNAME"
    if [[ "$?" == "0" ]]; then
        echo "$APPNAME is running. Will prompt user for permission to close"
        wasOpen="Yes"
    fi
}

# AppleScript to alert the user that the app needs to close
#Will Autoclose after 10 Minutes (900)
function show_update_alert()
{
    /usr/bin/osascript <<-EOD
    tell application "Finder"
        activate
        set DialogTitle to "$APPNAME"
        set DialogText to "Skype needs to close to repair your $disabledMessgae permission.  Please select ***Allow*** when prompted to grant Skype for Business Access to your $disabledMessgae"
        set DialogButton to "Fix Now"
        set DialogIcon to "Applications:Skype for Business.app:Contents:Resources:AppIcon.icns"
        display dialog DialogText buttons {DialogButton} with title DialogTitle with icon file DialogIcon giving up after 900
    end tell
    EOD
    echo "Prompt has completed"
    forcibly_close_app
}

# Send the app a signal to forcibly close the process
function forcibly_close_app()
{
    echo "Closing $APPNAME"
    /usr/bin/pkill -HUP "$APPNAME"
}

function open_app()
{
if [ "$wasOpen" == "Yes" ];
then
    echo "Re-opening $APPNAME"
    sudo -u $(ls -l /dev/console | awk '{print $3}') open "/Applications/$APPNAME.app"
else
    exit
fi
}

if [[ -z "$loggedInUser" ]]; then
    echo "No Logged in User.  Exiting Script"
    exit
elif [ "${loggedInUser}" != "itadmin" ] || [ "${loggedInUser}" != "root" ] || [ "${loggedInUser}" != "" ]; then
    #Report 
    disabledValues=$(/usr/bin/sqlite3 "$loggedInUser_home/Library/Application Support/com.apple.TCC/TCC.db" 'SELECT service, client FROM access WHERE allowed = '0'' | grep "com.microsoft")
    IFS=" "
    #echo "<result>$disabledValues</result>"

    #Check if both Mic and Camera are disabled
    if [[ "$disabledValues" == *"kTCCServiceMicrophone|com.microsoft.SkypeForBusiness"* ]]&&[[ "$disabledValues" == *"kTCCServiceCamera|com.microsoft.SkypeForBusiness"* ]]; then
        disabledMessgae="Camera and Microphone"

        #Close Skype and reset permission
        is_app_running

        #Reset TCC
        resetMicrophone
        resetCamera

        #Reopen App if it was previously open
        open_app

    #Check if Mic is disabled
    elif [[ "$disabledValues" == *"kTCCServiceMicrophone|com.microsoft.SkypeForBusiness"* ]];
    then
        disabledMessgae="Microphone"

            #Close Skype and reset permission
            is_app_running

            #Reset TCC Microphone
            resetMicrophone
            #Reopen App if it was previously open
            open_app

    #Check if Camera is disabled
    elif [[ "$disabledValues" == *"kTCCServiceCamera|com.microsoft.SkypeForBusiness"* ]];
    then
        disabledMessgae="Camera"  
            #Close Skype and reset permission
            is_app_running

            #Reset TCC Camera
            resetCamera
            #Reopen App if it was previously open
            open_app
    else
        echo "Permisions Okay"
        exit
    fi
fi