Large spreadsheet attachment causes Post to fail

[Dave En Velo]

I am using SMF 2.0.17. I have Post attachment limits set at 175mb for a single attachment and the attachment directory at 3,000mb. When I submit a Post with an Excel spreadsheet of 55mb there is a delay and I can see that the file is being uploaded. The screen then clears to an empty Post screen with no error message. I am using Chrome under Windows 10. As far as I can see there are no log error messages. The information in SMF on the attachments directory says it has loads of space.  Can anyone give me a hint as to where to start looking to solve the issue?

Thanks

[vbgamer45]

What about your PHP settings?
I have post that talks about this https://www.smfhacks.com/index.php/topic,3498.0.html

[Steve]

You don't wish to upgrade to 2.0.19? It is strongly recommended.

[Dave En Velo]

Thanks for the prompt responses.  It was not a good time to make possibly dangerous changes to the live site until now, hence my delay in replying.  vbgamer45 is absolutely right.  I was using default settings set by Bitnami who supply my SMF setup.  I have made changes to:

• upload_max_filesize
• post_max_size

in php.ini as suggested by vbgamer45 and everything is working as I want, I can upload much larger files.

In response to Steve.  I do wish to upgrade to 2.0.19 but it was not a convenient time and don't think that it would have solved this problem.

Thanks you both for your resonses.

[Steve]

In response to Steve.  I do wish to upgrade to 2.0.19 but it was not a convenient time and don't think that it would have solved this problem.

I didn't suggest that it would. Was just a reminder that upgrading to the latest stable version when you can is strongly recommended.