The Associated Press suffered a five-hour computer outage Monday that prevented much of its news coverage from being delivered to newspapers and some other media outlets.
The problems started at about 3 p.m., Eastern time as the news cooperative tried to apply a security patch recommended by Microsoft. The AP wanted the added protection before next week’s national and state elections. To do the security upgrade, the AP switched from its main system to its backup computers but they failed. It took about 5 hours to completely fix the problem.