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[Donny G France]

Suddenly I couldn't save any gif attachments to the ticket. Whereas previously there was no problem when doing it.

My filename does not have any special character, I try to use lowercase only but still with the same result.

A warning message pops up:
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[DPKJ]

@Donny G France Welcome to the community!

Have you tried refreshing browser or using different browser? I just tried adding GIF in Jira comment, and it works perfectly fine.