Why does a progress bar get stuck at 99%?
A bar showing 99 completed files out of 100 may be accurate even if the last file takes longer than all the others. Percentage of work and percentage of waiting time are different measures. Microsoft’s design guidance makes that distinction explicit.
Questions you could explore
- What exactly is the bar counting?
Start reading
- See primary-source-checks.jsonMicrosoft Learn, Progress Bars
Read the examples about unequal steps, remaining-time estimates and a bar that stalls at 99%.
Ready to try your ideas aloud?
Your topic carries over. Record up to 2½ minutes, depending on your plan.