I have been succssfully uploading attachments from zip files to records in Salesforce for the past week and today I am getting:
Even files I uploaded ok yesterday do not work. I have tried different browsers, other pcs, other zip files. I can upload the index csv file ok.
To add to this the zip files which are failing are around 340 - 355mb. I did manage to load a small zip with one file in it though, 3kb. Tried another at 30mb, that failed
We do need this resolved as its now holding up a Production data migration.