For about two weeks, my guest OS Manjaro has no more internet access. Host is Windows 7, connected via WiFi. So far I've used a network bridge but that wont work anymore. None of the other modes work either.

What has changed? Did you do a pacman -Syu on manjaro? Did network modules get updated? Look at /var/log/pacman.log if that's where manjaro keeps it. What network manager are you using with manjaro? I really don't know about the microsoft side of it. Did microsoft do an update?

You need to give a lot more info.

https://wiki.archlinux.org/index.php...ips_and_tricks

The error must be on the host side. The problem persists within other VMs, including recently created ones. Internet access on the host itself works fine. Recently there has been an update of Virtualbox but even downgrading to the old version didn't solve the issue.

When using a bridged adapter make sure the virtual adapter is connected the physical wifi adapter and not the wired adapter although that should be selected by default. Make sure the virtual adapter is enabled. What happens when you use NAT?

On my laptop I have seen a bridged adapter stop working which seems to happen if it goes to sleep. Never had a problem with using a NAT adapter.

I already knew that and that didnt solve my problem. I also tried out different adapter types. No success.
literally nothing at all. That's why I used the bridge.

Just trying to cover all the basis. The default virtual adapter i.e. Intel PRO/1000 MT Desktop (82540DM) has always been recognized by guest. In addition verify the cable connected box is selected.

From the guest point of view what is the output of the ip a command.

Just launched a backup of my VM to check out its network settings and whether they still work. Turns out they didnt.
Well here's a screenshot of the settings as they used to work:

1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
inet 127.0.0.1/8 scope host lo
valid_lft forever preferred_lft forever
inet6 ::1/128 scope host
valid_lft forever preferred_lft forever
2: enp0s3: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP group default qlen 1000
link/ether 08:00:27:49:31:2c brd ff:ff:ff:ff:ff:ff
inet6 fe80::e9e5:b99f:8f70:ca50/64 scope link noprefixroute
valid_lft forever preferred_lft forever

Well the adapter is recognized but no IP4 IP address. So how is networking configured? Are you using network manager?

My host is Windows 7, so: No.

No, I am referring to the guest.

In bridged adapter mode the guest will appear on the LAN just like the host. If the guest's networking is configured for DHCP then it should get an IP address from your router or other device running a DHCP server. I believe Manjaro uses Network Manager so is it running and how is it configured? You could try manually adding an IP address just to see if you can ping the host.

ip addr add 192.168.x.y/24 dev enp0s3 (use su or sudo as necessary to run the command as root)

replace 192.168.x.y/24 with whatever subnet your LAN is configure.

How can I find out the subnet?

One easy way is to examine the LAN subnet used on the Win7 host. Your guests should match that network.

Post the output of

https://support.microsoft.com/en-us/...our-ip-address

For W7
https://support.microsoft.com/en-us/...-pc-ip-address

On the other hand switching to NAT would cause the guest to use the Virtualbox internal DHCP server. We still do not know how your guest is configured.

I just read back through the entire thread and noticed that the OP never mentioned what virtualization was being used! I ASSUMED Virtualbox from some of what WAS said, but it might be good to nail this down.

What virtualization are you using on Win7 to support these guests?

Yep, Network Manager is preinstalled, but I've never used it. Never configured anything.
Problem persists after that.
Yes, I use VirtualBox 6.1.2.

PS: None of the Virtual Machines, that used to work, won't work anymore. No more internet access on any of them. This can only mean the problem is solely on the host and on none of the guests.