Coursera cannot play video

1.1 find hosts file

My position is ：C:\Windows\System32\drivers\etc\hosts
Can be found in C Plate , retrieval etc Folder .

1.2 open hosts file

If it is opened normally with Notepad , Will find , After modification , Can't save . therefore , You need administrator permission to open, modify and save .

1.2.1 Administrator permission open hosts file

open “ Search bar ”—> Search for “cmd”—> Right click “ Run with administrator privileges ”—> The system will jump out of “ Allow this app to be modified ”, choice “ yes ”

1.2.2 Notepad open hosts file

Input notepad C:\Windows\System32\drivers\etc\hosts

1.3 Look up the local address

Look up the local address , Search field input d3c33hcgiwev3.cloudfront.net. Choose the red arrow Any address .

1.4 modify hosts file

stay hosts Add... To the last line ：
Selected address + “ Space ” + d3c33hcgiwev3.cloudfront.net
then ,Ctrl+“S” preservation .
Last , Refresh coursera The video can be played on the page .

1.5 reference

Thank the following two authors for their dedication
https://blog.csdn.net/Garin_lu/article/details/112725801
https://blog.csdn.net/qq_39118700/article/details/106303995