The IRFU has told players that it will be next month before they can collectively return to training.
Under the Irish government's roadmap to lift restrictions, non-contact small group team sports training will begin again on June 8 and that could be the new date for a resumption.
Earlier, Irish rugby bosses had pencilled in Monday, May 18 as the date for a return to training for the provinces.
But following discussions with government officials, that has been shelved and professional players will continue to train remotely until directed otherwise.
According to the roadmap, rugby - as a close contact sport - will have to wait until August 10 before matches will be given the green light.
But that will only be the case if the previous four steps of the planned phased return to normality are deemed a success.
Champions Cup and PRO14 chiefs are still planning to finish their respective seasons in September and October, but Ireland's summer tour of Australia will not be going ahead and hopes of playing a series of Tests in the late autumn remain in doubt.
