Updates to TSS Booking Windows |
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Dear Tritons,
We are writing to share updates on TSS booking windows for first pass and instruction session enrollment.
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All undergraduate first pass booking windows have been extended until August 14, 2026 at 10:59 p.m. If your booking window has already closed, it has been reopened and extended until that date. If you have already successfully booked your first-pass courses, no action is needed from you at this time.
This extension is in response to the technical challenges that some students have faced with booking in TSS. We understand how important it is to book the courses you need, and we appreciate your patience and partnership as we work to improve the booking experience.
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Instruction Session Enrollment |
Additionally, Instruction Session Enrollment, the window that allows students to book up to 22 units, has been updated to begin on September 24, 2026. Beginning September 28, 2026, students can submit a TEA request to exceed the 22-unit limit. You can view the updated booking schedule on the Booking Start Times page in Blink and in TSS via My Appointment Times.
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Our teams are continuing to review support tickets, identify trends and implement fixes as quickly as possible. If you experience a new issue while booking, please submit a support ticket so we can investigate and address it. If you have already submitted a ticket, there is no need to submit another one for the same issue; your existing ticket remains active and is being reviewed.
🚩 IMPORTANT: Please note that the end time of your booking window is 10:59 p.m., not 11:59 p.m., due to planned system maintenance.
🚩 IMPORTANT: Please use the Chrome browser when accessing TSS and booking your courses. Students using other browsers, such as Firefox and Safari, have experienced issues booking courses. If you are having trouble booking while using Chrome, please try using an incognito window.
🚩 IMPORTANT: Beginning Tuesday July 28, 2026, TSS will be unavailable nightly (including weekends) from 11pm-7am PDT to support data migration and system maintenance. Visit the UC San Diego ITS Systems Status page to check for current incidents and service updates related to TSS.
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- For TSS guides, training materials and knowledge base articles, visit the TritonLink TSS Training Hub.
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For a TSS access issue, technical issue or information that appears incorrect in TSS: Use one of the support options listed. Additional details, dates and times can be found on the TSS Project Website - Getting Support for TSS.
- Email support: tss@ucsd.edu - Emailing this address will automatically create a support ticket and add your inquiry to the support queue.
- Phone support: (858) 246-4357, press 2 for TSS support
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Office hours support (Monday - Friday, only): Zoom
- In-person support: Applied Physics & Mathematics, Room 1313, First Floor (Map | Monday - Friday, only)
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Thank you for your continued flexibility and understanding as we work through this transition.
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University of California San Diego
Office of the Registrar
9500 Gilman Drive
Mail Code 0022
La Jolla, CA 92093
(858) 534-3150 | Visit Our Webpage
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University of California-San Diego 9500 Gilman Dr | La Jolla, CA 92093 US
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