Strange Netflix Problem - Does anyone know about advice?

Today I turn to you with a problem that I'm absolutely at a loss: For several days, I can only occasionally watch movies and series of Netflix on my laptop; but usually a Netflix error message. Netflix spits out a bunch of different error codes, but they all have something to do with network errors.

So far not very mysterious, but now comes the catch or better the hook:

The problem only occurs with my laptop. On all other devices in our household, mobile phone, tablet, etc. There are no problems whatsoever.
The problem only occurs with Netflix, all other streaming providers seem to work (Amazon Prime, YouTube, etc.)
Different speed tests provide solid results (between 40 and 50 Mbps download and between 8 and 10 upload.)
The problem occurs on all the browsers I've tried (Chrome, Firefox, and Edge).
The Netflix homepage and all other websites load normally.
[Edit] The problem occurs regardless of whether someone is logged in on other devices or not.

I have tried the following:

All browser data deleted.
AdBlock disabled.
Network settings of the laptop reset.
(And of course the usual on and off of the laptop, plug in and unplug the router, etc.)

In my opinion, it can hardly lie on the router or WLAN, because then either similar problems on other devices or similar problems on this laptop would have to occur with other streaming providers. My best (and I'm afraid not very good) theory is that it's up to McAfee Webadvisor. Could it be?

My laptop:

Lenovo ideapad 330, 8 GB Ram, Intel i5 (8th generation), Windows 10 x64 (just two weeks old).

router:

Fritz Box 7390

Internet:

Telekom 50 Mbps

Thanks in advance for the help and best regards

That's just a stupid question, but maybe there are too many devices registered with Netflix? Since there's ne limitation on the number of terminals? Could there be the crux, because you have tried everything on the network side and that looks good…

Hi, thanks for the answer. The thought came to me, but unfortunately it can't be. At Netflix, the UHD subscription we have has no limit on devices, so I checked that out. Only 4 devices can access Netflix at a time, but the problem I should have added is whether or not someone else is logged in.

It seems like it's up to your device. If it was up to Netflix or your box would be synonymous other devices of the same problem to be affected and that is according to your descriptions not the case. Who exactly it is on this device, you may be lucky if you guess here but you're better Advise if you take your device and turn to a specialist with your problem. Someone who has your device in front of you can certainly help you a lot better than someone here who can only get an idea of what you're describing.

Probably it is only a small attitude mistake on which no one can come here because one can make only after your narratives a picture.

Therefore, grab your device and go to a store selling laptops. Just take a look over most stores, if you're lucky, your problem is already solved.

If you have ne security software installed permanently running, disable it and try again. (The standard software of Windows is enough anyway.)

Have McAfee LiveSafe on it. Shut down all features of McAfee (Firewall, Realtime Scan, Web Advisor and even Automatic Updates, AntiSpam and Scheduled Scans). That did not help either. If it were not so absurd, I would say that my laptop is not compatible with Netflix. Well I'll probably deal with the support.

I just checked the properties of my network. And "random hardware addresses" turned on. For the moment it works perfectly. I have no idea what that means exactly. But could that actually fix the problem?

I've never heard of it, but network is not my topic at all.

Of course, I'm already curious. Googled on the go.

If you go after that: https://iotex.co/blog/neuigkeiten-wissen/flixbus-wlan-sperre-umgehen

Then something on your laptop, or outside (router? Netflix itself?) Just lock your hardware address.

TheHeiimnetzwerk.de writes to it
"Random Hardware Addresses - Ultimately, a MAC address is used to address a device when transmitting over Ethernet, Wi-Fi, and PowerLine, and any such network interface has such a factory-programmed address, so you can always use the same device Connect the network (eg a public WLAN hotspot), the operator of the hotspot can uniquely recognize your device If you want to give as little information as possible, then you can switch on the function "random hardware addresses", so the network interface gets a new one every time random MAC address, if you connect to the network for which this setting was made If you connect to your own home network, then the setting should be "off", otherwise functions that use the MAC address as an identification criterion get confused. "

It has not solved the problem in a sustainable way. But it is strange. This afternoon, for a while, it worked exactly as you would imagine. Tonight: the old problem. That understand who wants, at least I do not do it and will now fool me with support.