Why can't I change my MAC address?

[email protected]:~# sudo service network-manager stop
[email protected]:~# sudo ifconfig wlan0 down
[email protected]:~# sudo macchanger -a wlan0
Current MAC: XX:XX:XX:XX:XX:XX (Apple)
Permanent MAC: XX:XX:XX:XX:XX:XX (Apple)
[ERROR] Could not change MAC: interface up or insufficient permissions: Too many open files in system
[email protected]:~#

I search on google and tried everything it would not work.

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have you tried lazy script?

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Hey, maybe try :
sudo service network-manager stop
sudo macchanger -a wlan0
sudo service network-manager start

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