A erroneous configuration update, according to the company, was the cause.
Facebook owns all three services, which could not be accessed on the web or through smartphone apps.
With 10.6 million trouble complaints from around the world, Downdetector, a company that tracks outages, said it was the greatest failure it had ever seen.
Users were able to access the sites about 22:00 GMT after the services went down around 16:00 GMT.
Facebook said in a statement on Tuesday that the improper configuration modification impacted the company’s internal tools and processes, complicating efforts to remedy the issue.
“No evidence that user data was compromised as a result of this disruption,” the company claimed.
Facebook apologized to individuals who were impacted by the outage in a tweet sent out on Monday.