Laptop keeps losing Wi-Fi connection - what to do?

I use a laptop with Windows 10 for my home office (Lenovo Thinkpad L580, still slightly tuned)

Now we have a new router from Vodafone at home (after the old one has given up the ghost) and a Fritz repeater to bring the WLAN reception even to the farthest corner of the house. My laptop connects to the internet via the repeater.

However, it happens again and again that the connection simply breaks off.

The globe with a prohibition sign appears in the system tray instead of the WLAN symbol - just like when you don't have internet. Sometimes the connection re-establishes itself, sometimes I have to click around by hand even though "Connect automatically" is activated.

Further key data:

Between my laptop and the repeater there are about 5-6 meters as the crow flies and only 1 wall.
The disconnections occur frequently within a few minutes after waking up from energy-saving mode (but not exclusively).
The connection is usually lost twice in a row, i.e. If it is re-established after the 1st break, it will break again; this often within less than 1 minute, max. 2 minutes.
The connection is (as long as it is) flawless and I always have full bars with signal strength.

What could be the cause and how can I fix the connection problems?

I had the problem too, since you are using a repeater, I assume that your router is not with you. Therefore, I would recommend buying a repeater with a LAN cable connection (the repeater should not be inserted directly into the laptop).

Of course, there can be many causes that lead to these crashes in you.
I can only show you a few possibilities here which you can take to further isolate your problem and, if necessary, to correct it yourself.

1 # Vodafone router and your Fritz Repeater,.

The router is of course heavily adapted to your operator. However, if you log on to it, does your Fritz repeater appear there as a "network device"? Unfortunately, I can't tell you which menu this is again on the router. Don't have one at hand right now.
As a rule, something should be displayed as a repeater, access point, or whatever, but not as a "network device".
In short - it doesn't have to mean anything, but it could be a cause that your laptop does not recognize the access as such because it is a device and not an access point.

Possibilities. There may be a firmware update for your repeater. Could be fixed then.

2 #

Your neighbors, who disturb your "reconnection" after waking up so that it doesn't work right away.

How to fix this can be found here --->

There I actually described it quite well and I'll save myself a repetition.

3 #

Everything is actually fine, only your Windows is causing problems here.
I also hear that very often and I also had to find out for myself - but which has less to do with WLAN than more so that Windows has problems waking up again.

To do this, proceed as follows

Press Windows Key + X

Under the menu that appears you go to "Network Connections"

You will see the network status in the next window

The "Advanced Network Settings" can be found a little further down

There go to "Change adapter options"

Here you will find all your network interfaces in the further window.

Usually with a laptop - LAN and WLAN

Click with the "right mouse button" on the WLAN interface so that the context menu opens.

Go to Properties

In the following window you can see

"Connect via:" and the name of your WLAN card and next to it a button labeled "Configure"

Clicked on it and then in the next window look for the tab "Energy Management" and select it.

Remove both hooks here are with

"Computer can turn off the device" and "Device can activate the computer"

labeled.

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That would be what would come to my mind right now.