Messages can not send files

I tried power off to solve a problem with the Messages/iChat for 6 months now and I hope the Apple community might have a solution. We have an office with a mixture of Mac under OS X (based on capabilities) 10.6.8 (off 10), 10.10.5 (2 for those who hate the model) and 10.11.4 (2). We use Hello messages to send text messages, video chat and send small files (usually images) internally around the office. About 6 months ago Messages/iChat lost the ability to send files. Everything works fine (except General bugs of windows mobile / endangered and buddies on the machines of Yosemite/model). On the senders end you get no notification that the transfer has failed, or that you get a small 'I' icon in the window of conversations that draw attention to the failure. The same thing in the 'File transfer' window, sometimes the file will be marked as 'sent', or 'fail', in both cases, the receiver sees the transfer as it is 'impossible' or it crashes with a progress bar that changes to 'fail' if interact you with the download arrow or double-click on the file icon.

Various forums to suggest solutions, that everything I tried:

  • Quit and restart Messages.
  • Restart the computer.
  • Deleting of plist.
  • Make sure UPnP is enabled on the router.
  • Make sure UPnP is not enabled on the router (learned to love these weird problems, everyone has a different idea)!
  • Ensure ports 443 (Messages), 5190 (UDP for Messages), 5297, 5298 (UDP Hello) and 5298 (TCP Hello) are all open.
  • Compress images.
  • Force quit "matches" in the activity monitor.
  • Ensuring that no one is Little Snitch active.
  • Ensuring that there is no firewall on.
  • Ensuring that user names are not too long (there was a suggestion Hello has an internal deadline that could result in names are identical coupe).
  • Make sure that OS X is updated (this persisted for several updates now).

There is a guy named Ralph Johns (UK) on Apple's Support forums, which has been troubleshooting this kind of problem with iChat/Messages with various posters since at least 2011. Seems to know his stuff, but has not been able to find a solution for everyone. Posters have tried swapping routers, used wireless instead of ethernet (or vice versa) and even two bad guidance computers connected together via a simple switch, so I am not convinced that there is a network problem.

Anyone have any ideas?

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Hello

I've done it since 2004 in fact.

Re: -.

  • Ensure ports 443 (Messages), 5190 (UDP for Messages), 5297, 5298 (UDP Hello) and 5298 (TCP Hello) are all open.

IMessages Login using port 443 (made the AIM Login today and Yahoo if you have configured the account)

Swaps the GOAL to use port 5190 (UDP when this file transfers).

The other three ports lists are listed as being necessary by Hello but use Little Snitch myself I was never able to prove that a similar thing on behalf of the GOAL and Exchange port during the basic move IM chat to those containing photos of cats.

Re: -.

Ensuring that no one is Little Snitch active.

Little Snitch will block (if you tell) the processes that you cannot associate with Messages as such.

It's pop up you should see if you transfer files with the iMessages account. (Note the server and port).

Why they have put in place a different process instead of use the same AIM, Jabber and Hello use.  It has a slightly different name.

I tried to send pictures on PURPOSE to my MacBook Pro that uses iChat 5.0.3

I have also tried to send using Hello from iMac MacBook Pro and cannot operate.

However the Hello from the MacBook Pro to the iMac strangely works.

The version of iChat says that the File Transfer window expected FRO me (in the iMac) to meet start sending in trying to use AIM.

However, the Chat window in iChat 5.x.x watch separately a message from AIM servers saying that the AIM Proxy did not work and try again and it make no changes to the file transfer window.

2nd attempt to use iChat 5.x.x Hello also failed.

It seems to be no reason why it fails.

Re: -.

Ensuring that user names are not too long (there was a suggestion Hello has an internal deadline that could result in names are identical coupe).

Hello items in the sidebar of finders tend to take the name of system preferences > sharing

The ID Hello buddy would then map My user on the name of the computer remote [email protected]

Possibly the naming conventions have changed over time, but I don't normally have questions (the MacBook Pro doesn't seem like spaces or apostrophes when I named it wherever the iMac running OS version much later when appointed allows them).

However as I had them connected should not be the issue.

Which can be a problem is to name them all Macintosh or the Admin according to the naming process, that you can use and if a Diskimage is used to make them all have the same applications and settings.

UPnP occurred as iChat 3 and 4 used so several ports you couldn't open them all in Port Forwarding set ups.

Video and Audio conversations only used 22 ports

GOAL was three

Hello supposed to use 3 in the Apple Documentation

Jabber claimed to need at least one, but was actually 2 to cover the SSL connections.

See using iChat with a firewall or a NAT - Apple Support router

Two things that you don't mention that you have tried.

NVRAM (PRAM) reset How to reset NVRAM on your Mac - Apple Support

and a secure start

Repair permissions appeared in disk utility in El Capitan and was always decried as useful in many settings, while others swore by it.

Finally, you might want to watch and read and write permissions.

It has become much more complicated with some applications such as Messages can be sandbox which adds several layers of reading and writing of files you need also to have access to write even the .plists

I'd take a peek at this thread and useful (Orange) marked post-test and resolved green one if necessary.

The Original message is followed by the fixed one but one useful by that you should start is then displayed.

21:42 Thursday; July 21, 2016

 iMac 2.5 Ghz i5 2011 (El Capitan)
 G4/1GhzDual MDD (Leopard 10.5.8)
 MacBookPro (Snow Leopard 10.6.8) 2 GB
 Mac OS X (10.6.8).
 iPhone and iPad (2)

Tags: Applications

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