If You Missed the Test
Missing your scheduled test does not automatically end your application, but you must act quickly and honestly. If you know in advance that you cannot attend, contact IRCC before the test date to explain and request a reschedule. If you miss it without notice, IRCC may send a new invitation or may require you to explain the absence; ignoring the situation is the worst option. A common trap is assuming a missed test means automatic refusal - usually it leads to a rescheduling step, not immediate rejection, but only if you respond.
Provide a reasonable explanation if asked, and supporting documents where relevant (for example, a medical note or proof of an emergency). IRCC decides whether to reschedule. Repeated absences or failure to respond to IRCC correspondence can harm your file, so keep monitoring your email and mail.
Remember that the test is one stage in a longer process that also includes background checks, a possible interview or hearing, and the citizenship ceremony. A missed test delays the timeline but does not change the requirements you must still meet.
Worked example: You are ill on test day. The correct approach is to notify IRCC as soon as possible, explain the illness, and provide documentation if requested - then wait for a new invitation. The wrong approach is to attend while unable to participate or to simply not show up and stay silent.
Rule of thumb: communicate early, document your reason, and keep your contact information current so the new invitation reaches you.