People were unable to book a Covid-19 PCR test for a time earlier today due to a technical problem with the HSE's website.
The health service says the issue affected its book a test portal.
However it says the glitch has since been resolved and the system's now operating normally.
It's advising anyone who received confirmation of an appointment this morning not to rebook a test.
The number of people testing positive for Covid 19 nationally remains high,
The Chief Medical Officer Dr Tony Holohan has again stressed the sharp increase in virus rates in the 5-11 year age group.
He's urging that birthday parties and play dates over the next two weeks should take place outdoors and be kept small, while sleepovers should be avoided.
He also says indoor community gatherings involving children - including communions, confirmations, nativity and other seasonal events should be avoided.
There are 20 positive Covid patients being treated at Galway University Hospital today, 9 at Sligo University Hospital and 7 at both Mayo and Portiuncula University Hospitals.
There are three patients with the virus in ICU at Galway University Hospital, 2 patients in ICU at Portiuncula with the virus, and 1 in each ICU with the virus at Mayo and Sligo University Hospitals.