Computer account lockout FAQ (students)

Why is my account locked out?

In some cases your computer account can become 'locked out'. There are several reasons why this can happen:

  • You enter your password incorrectly 15 times
  • An application which stores your Trinity network login password tries to authenticate multiple times unsuccessfully
  • Someone tries to access your account without your knowledge

For these reasons, and to help with IT security, IT Services has implemented a lockout policy.

What is the current lockout policy?

The IT Services department has put a policy in place to protect against potential hacking in to an account, whereby if there are 15 consecutive unsuccessful attempts to login to the network within any 30 minute period, the account is automatically locked for the period of 4 hours.

How do I unlock my account?

If you need to unlock your account here are the options available to you:

  • You can unlock your account by using TCD Password Manager but only if you have already registered for this service
  • You can come in person to the IT Service Desk on the ground floor of Áras an Phiarsaigh and we will unlock your account here. Remember to bring your valid student/staff card

How do I register with Password Manager?

All relevant information is available on the TCD Password Manager page.

What if my account is repeatedly locked out?

We will need to investigate the problem in more detail. If your account is repeatedly locked out, please contact the IT Service Desk and be prepared to provide the following information:

  • The exact lockout times
  • List devices you are using on the Trinity network
  • List applications that are using your Trinity network login password
  • Try to recall if you have revealed your password to anybody either in person or via web

Need further help?

Search the Knowledge Base for how-to’s and answers to commonly asked questions

Phone: +353 (01) 896 2000
Walk-in: Ground floor, Áras An Phiarsaigh
Web Portal:
(see how to log or check an enquiry at

Please be aware of the IT Service Desk opening hours