Ministry of home affairs confirmed that Isa's visa has been withdrawn immigration sources added that the decision was not taken under Chinese pressure.
Isa had "suppressed" facts while obtaining it but admitted that China had made its position clear to New Delhi.
Rijiju, who handles the visa issue in the home ministry, said Isa should have applied for conference visa rather than applying for tourist visa.
It is not a protest but China's concerns have been conveyed to India, they said.
China accuses Isa of terror activities in the remote Xinjiang region where there is frequent violence between the local Uyghur population and government forces.
Significantly, reveals Rajeev Sharma, the MEA was not even consulted on the Dolkun Isa issue.
Lu Jinghua, a well-known Tiananmen activist, was scheduled to attend the April 28 meeting of dissidents and exiles in Dharamsala.
"India has made a cogitative decision, and shows the common views of China and India in fighting terrorism and separatism, and the determination of further cooperation," Fu Xiaoqiang, an expert on South Asian studies at the China Institutes of Contemporary International Relations, told the Global Times.
Cancelling Uighur leader Dolkun Isa's visa could have been a mutual face-saving exercise for New Delhi and Beijing.
No Indian government has taken on China like this ever before and shows that the three top Indian officials -- Sushma Swaraj, Manohar Parrikar and Ajit Doval - ran into China's Great Wall on the twin questions of Pakistan and terror when they interacted with their Chinese interlocutors In past few days, says Rajeev Sharma.
Before the 2014 Lok Sabha elections, Modi had criticised Manmohan Singh's policy towards China and promised a more strong-willed policy. Those claims are now under a cloud.
'It needed political courage on the part of the prime minister to make such an intervention at the present juncture when the hawkish opinion rules the roost in the Indian foreign-policy discourses in our media, and, unfortunately, the sane voices have largely fallen silent,' says Ambassador M K Bhadrakumar.