When I boot up kali linux from virtual box I get no problems. Then when I type: ```ifconfig``` in the terminal sometimes my wifi adapter shows up right away and sometimes it doesn't but if it doesn't then I do this, "ifconfig wlan0 down", "ifconfig wlan0 up" then shows wlan0 right away if it wasn't there already. But that's not my problem.

The problem I'm facing is it loves to hard block me whenever, like when I install new software's/scripts on kali linux, ```apt-get install``` " " or I try to do some attack on kali linux and then out of no where it will just hard block me for some reason.

Example would be: when I'm scanning for networks airodump-ng wlan0

```
read failed: Network is down
ioctl(SIOCSIFFLAGS) failed: Operation not possible due to RF-kill
Can't reopen wlan0
```

Then I checked if I was hard blocked

```rfkill list all```
```
0: phy0:Wireless LAN
Soft blocked: no
Hard blocked: yes
```

Another example of me getting hard blocked was when I did this:

``` ifconfig wlan0 down ```

``` ifconfig wlan0 up ```

```
SIOCSIFFLAGS: Input/output error
```
Then I checked to see if I was hard blocked

```rfkill list all```
```
1: phy1:Wireless LAN
Soft blocked: no
Hard blocked: yes
```


Like I said before these aren't the only examples I'm showing of me getting hard blocked.


The model of my labtop is ```MacBook Pro11,1```

```Hyper-Threading Enabled```

I also have the ```wifi connected on my mac os``` but not on ```kali linux``` because I choose ```NAT NETWORK``` in the ```Network section of Virtual Box```.

The wifi adapter I'm using is ```Linksys AE3000```

The type of kali linux I installed was from ```https://zsecurity.org/download-custom-kali```

And everything is up to date cause I did ```apt-get update``` and I got
```
Err:1 http://http.kali.org/kali kali-last-snapshot InRelease
Could not resolve 'http.kali.org'
Reading package lists... Done
W: Failed to fetch http://http.kali.org/kali/dists/kali...shot/InRelease Could not resolve 'http.kali.org'
W: Some index files failed to download. They have been ignored, or old ones used instead.
```

Could someone pls help.

Did you read the message?? You say it's up to date, but it clearly says it could NOT find the update server. Secondly, have you read Kali's website, or the Kali sticky posts here?? Kali is for experienced Linux users...and their docs tell you why wifi isn't working and how to re-enable it. For example:
https://forums.kali.org/showthread.p...ll-not-working

Why did you download from a third-party site, rather than the Kali website??

zomucb, please also look the document articles:
https://www.kali.org/docs/troublesho...driver-issues/
https://www.kali.org/docs/nethunter/wireless-cards/