File/attachment size limit isn't a configurable option in HipChat Server admin interface at the moment however you are welcome to vote up the public feature request about this matter here: HCPUB-374. There's a user who shared a workaround for that however it may work only on web client since there's a hardcoded limitation enforced on the desktop client.
Earlier this year we made the difficult decision to discontinue our team messaging tools, Stride and Hipchat. The end of life date for Stride and Hipchat Cloud is quickly approaching - February 15, 2...
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