For the second time this year, Twitter has experienced an outage.
While service has been restored, many experienced issues accessing Twitter.com and Twitter's third-party mobile applications Thursday.
Twitter's new video sharing service, Vine, also experienced a service disruption.
"Some users may be experiencing issues accessing Twitter. Our engineers are currently working to resolve the issue," Twitter posted on its status blog at 10:25 a.m. ET on Thursday.
After resolving the issues Twitter said that users "experienced intermittent issues" for close to three hours.
"This incident has now been resolved. We apologize to users who were affected by this, and we're working to ensure that similar issues do not occur," it said.
Just 10 days earlier, on Inauguration day, Twitter had the same issue. Many were unable to send 140-character messages or get to the site.
Twitter used to be infamous for such periodic outages and the appearance of the "fail whale" error page, which many are seeing today. It has substantially improved its server capacity in the past two years. However, in July there were similar widespread outages.