Err_proxy_connection_failed appears using the browser as shown in the figure below: ![](https://programmerah.com/wp-content/uploads/2020/10/20181224112205905.png)
Solution:
1. Enter setting -& GT; Click Show Advanced Settings:
![](https://programmerah.com/wp-content/uploads/2020/10/20181224112903900.png)
2. Click to change the proxy server Settings:
![](https://programmerah.com/wp-content/uploads/2020/10/20181224113012890.png)
3. Display Internet properties and click LAN Settings
![](https://programmerah.com/wp-content/uploads/2020/10/20181224113202161.png)
4. Click the proxy server for LAN (√) and you’re done
![](https://programmerah.com/wp-content/uploads/2020/10/20181224112205905.png)
Solution:
1. Enter setting -& GT; Click Show Advanced Settings:
![](https://programmerah.com/wp-content/uploads/2020/10/20181224112903900.png)
2. Click to change the proxy server Settings:
![](https://programmerah.com/wp-content/uploads/2020/10/20181224113012890.png)
3. Display Internet properties and click LAN Settings
![](https://programmerah.com/wp-content/uploads/2020/10/20181224113202161.png)
4. Click the proxy server for LAN (√) and you’re done
![](https://programmerah.com/wp-content/uploads/2020/10/20181224113453341.png)