There are apparently significant disruptions not only on the Facebook platform, but also on the Instagram and Whatsapp services. The cause of the problem is not yet known.
In the event of an unusually large outage, several Facebook group services went offline across the board on Monday.
In addition to the actual Facebook platform, the WhatsApp chat service and the Instagram photo app were also inaccessible for many users, as fault reports on websites such as Downdetector showed. A Facebook spokesman apologized via Twitter and assured that the online network was working on the interference. The causes of the problems were initially not mentioned.
For some web experts it looked like a problem with the DNS service. Among other things, this service ensures that website names typed in letters are translated into IP addresses so that they can be accessed.
The technology boss of the cloud service provider Cloudflare, John Graham-Cumming, pointed out that users and software continue to try to control Facebook services. That ensures a massive increase in the load on other DNS services, he wrote on Twitter.
Other platforms also affected
On the malfunction platforms, users sometimes reported problems with other online services, which were initially not confirmed on a large scale. For example, at the large web service provider AWS from Amazon, which many start-ups and large companies rely on, all offers ran normally, according to the status page.
DNS malfunctions happen again and again. In July, for example, one of them ensured that numerous websites were temporarily inaccessible. The trigger back then were problems with the web service provider Akamai. The centralization of the network infrastructure at large providers ensures that the failure of a company can tear down as many services and websites from the network.
At the beginning of June, numerous websites around the world were unavailable for around an hour after a malfunction with the Fastly cloud service. At that time, the British government, the Reddit platform and the news portals of the Guardian, the New York Times, the Financial Times and the French newspaper Le Monde were affected.

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