A knowledge base article about Update your CalNet passphrase on a managed machine (Berkeley Desktop) provided by the UC Berkeley IT Service Hub - Knowledge Portal
If you use your CalNet ID and passphrase to log in to your campus-managed Windows or Macintosh machine, you may have trouble logging in after you change your passphrase. To avoid this, follow these steps:
You will likely need help changing your passphrase to avoid locking yourself out of your computer. Please contact ITCS Service Desk if you need to change your passphrase on a managed Mac. Be sure to keep track of both your old and new passphrases, if you do change it, as you may need them later.
If your new passphrase does not work to unlock your machine, your old passphrase may continue to work. Please contact ITCS for additional support through this link.
Tip: make sure to safely store your new CalNet passphrase (ideally using a passphrase manager like UCB’s free LastPass Premium. You may not be able to log in to your computer if you forget your new CalNet passphrase. In this case, Service Desk may request that you bring your computer on-campus for assistance.