Facebook Inc. said on Wednesday that a problem with uploading or sending media files on its apps and platforms has been resolved.

Earlier in the day, the company said it was working to fix a glitch that was preventing users globally from sending and receiving images, videos and other files over its social media platforms, including WhatsApp and Instagram.

"During one of our routine maintenance operations, we triggered an issue that is making it difficult for some people to upload or send photos and videos," Facebook said.

Facebook, which gets tens of millions of dollars from advertising revenue daily, declined to comment when asked whether it will refund businesses. In a similar mishap in March, the company said it would consider refunding advertisers for lost exposure.

"The disruption appears to be related to an internal infrastructure or application issue," said ThousandEyes, a company that monitors internet traffic globally.

The partial outage frustrated users of the world's largest social network, with many taking to Twitter to complain.

<a href="https://twitter.com/hashtag/instagramdown?src=hash&ref_src=twsrc%5Etfw">#instagramdown</a> <a href="https://twitter.com/hashtag/facebookdown?src=hash&ref_src=twsrc%5Etfw">#facebookdown</a><a href="https://twitter.com/hashtag/whatsappdown?src=hash&ref_src=twsrc%5Etfw">#whatsappdown</a> <br><br>Twitter, before <br>WhatsApp, <br>Facebook<br>Instagram<br>Crashed Twitter now <a href="https://t.co/Rjvwiymrq5">pic.twitter.com/Rjvwiymrq5</a> —@Jefe_says Tried sending a picture on WhatsApp, didn't work.<br><br>Then went onto Facebook messenger, also didn't work.<br><br>Finally Instagram DM, again didn't work.<br><br>The problem when one company owns everything 🤦🏽‍♂️<a href="https://twitter.com/hashtag/whatsappdown?src=hash&ref_src=twsrc%5Etfw">#whatsappdown</a> <a href="https://twitter.com/hashtag/facebookdown?src=hash&ref_src=twsrc%5Etfw">#facebookdown</a> <a href="https://twitter.com/hashtag/instagramdown?src=hash&ref_src=twsrc%5Etfw">#instagramdown</a> —@SuperSaf Also over here in <a href="https://twitter.com/hashtag/Canada?src=hash&ref_src=twsrc%5Etfw">#Canada</a> <a href="https://twitter.com/hashtag/facebookdown?src=hash&ref_src=twsrc%5Etfw">#facebookdown</a> <a href="https://t.co/LLky50FdyY">https://t.co/LLky50FdyY</a> —@steftravels

More than 14,000 users reported issues with Instagram, while more than 7,500 and 1,600 users reported issues with Facebook and WhatsApp, according to outage tracking website downdetector.com.

The website's live outage map showed that the issues mainly cropped up in parts of Europe and the United States. But users in Canada were also reporting issues related to pictures, apps and logging in, according to the website. It showed reports from Canada peaked around noon, at more than 1,000.

Facebook had experienced one of its longest outages in March, when some users around the globe faced trouble accessing Facebook, Instagram and WhatsApp for more than 24 hours.