Welcome to the news hour. The pressure is mounting on President Biden to step aside

from his campaign a day after the Republican National Convention wrapped up with a

highly anticipated speech from former President Donald Trump.

We'll have more on the shifting political landscape in a moment, but we start tonight with a

tech outage around the world that halted flights, disrupted emergency services, and created headaches for businesses.

The underlying problems behind the glitch were fixed by the afternoon, but the ripple effects

have lasted throughout the day and may continue well into tomorrow.

And as William Bringham reports, thousands of passengers are still trying to get to their destinations

tonight.

It was the glitch felt around the world. Today's software failure triggered far-reaching

and frustrating outages globally. Air travelers were among the most directly affected,

with tens of thousands of flights

delayed and thousands more canceled. I've never seen it like this before, especially

in this airport. This airport is my favorite because it's usually getting it out. The outage was caused by a faulty software update within Microsoft's

Windows operating system. Many users first noticed the problem when they

saw the notorious so-called blue screen of death.

The faulty update was issued by the cyber security firm Crowd Strike.

CEO George Kurtz offered a mea culpa this morning on the today show.

We're deeply sorry for the impact that we've caused to customers, to travelers, to anyone affected

by this including our companies.

So we know what the issue is. We're resolving and have

resolved the issue now. The FAA temporarily grounded major U.S.

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