The channel was blocked as YouTube was updating its "partner agreements", a spokesperson for the website had said yesterday.
"YouTube unblocked PIB's YouTube channel today at 8 am," a senior official said today.
But PIB could not live stream the prime minister's event from the Uttarakhand capital Dehradun on International Yoga Day as the function got over at 8 am.
The problem was communicated to YouTube India yesterday, a PIB source said.
PIB India's YouTube channel had been experiencing a technical glitch because of which viewers were not able to access content on the channel, the source had said yesterday.
YouTube channels of MIT Open Courseware (which has north of 1.5 million subscribers), Jamendo Music and Blender Foundation (with over 190,000 subscribers) were also blocked.
"Videos on a limited number of sites have been blocked as we updated our partner agreements. We are working with them to get their videos back online," the YouTube spokesperson had said yesterday.
Officials said the channel was blocked from June 15 (Saturday) and came to the notice of officials on June 18 when a press conference of Railway Minister Piyush Goyal could not be streamed live.
PIB YouTube channel, which was launched in 2016, has 1,52,804 subscribers and 3,560 uploaded videos.