Support intro
Sorry to hear you’re facing problems 
help.nextcloud.com is for home/non-enterprise users. If you’re running a business, paid support can be accessed via portal.nextcloud.com where we can ensure your business keeps running smoothly.
In order to help you as quickly as possible, before clicking Create Topic please provide as much of the below as you can. Feel free to use a pastebin service for logs, otherwise either indent short log examples with four spaces:
example
Or for longer, use three backticks above and below the code snippet:
longer
example
here
Some or all of the below information will be requested if it isn’t supplied; for fastest response please provide as much as you can 
Nextcloud version (eg, 12.0.2): 17.0.2
Operating system and version (eg, Ubuntu 17.04): Ubuntu 18.04 LTD
Apache or nginx version (eg, Apache 2.4.25): Apache 2
PHP version (eg, 7.1): 7.2
The issue you are facing:
When uploading large files via Cyberduck WebDav, Windows / MacOS WebDAV, Nextcloud Client, or the Web Interface, the following happens:
With WebDav > It uploads a file / then restarts the upload or completely timesout partial way.
With Nextcloud Client > It uploads to 100% and gets stuck at 0 seconds.
With Web UI > It uploads to 100% and then throws a Exception error about the wrong size.
Is this the first time you’ve seen this error? (Y/N): Y
Steps to replicate it:
- Setup S3 Primary or External Storage
- Upload large file via WebUI / WebDav or Nextcloud Client
The output of your Nextcloud log in Admin > Logging:
Sabre\DAV\Exception: An exception occurred while uploading parts to a multipart upload. The following parts had errors: - Part 2: Error executing "UploadPart" on "https://server32113123.s3.us-east-1.amazonaws.com/urn%3Aoid%3A5232?partNumber=2&uploadId=AWbri3n6QoRtojFjskE8Ze9zORR8KSMwvv5UQphEsYIzkrqnKd.EX6pOi0kGGK_pFLfYkZab7iehIA3xRi9b5BVgorxBcU4CcolILg9Iw3aQIWQ1Q8D4iO0vSUTb9yOJ"; AWS HTTP error: Client error: `PUT https://server32113123.s3.us-east-1.amazonaws.com/urn%3Aoid%3A5232?partNumber=2&uploadId=AWbri3n6QoRtojFjskE8Ze9zORR8KSMwvv5UQphEsYIzkrqnKd.EX6pOi0kGGK_pFLfYkZab7iehIA3xRi9b5BVgorxBcU4CcolILg9Iw3aQIWQ1Q8D4iO0vSUTb9yOJ` resulted in a `400 Bad Request` response: <?xml version="1.0" encoding="UTF-8"?> <Error><Code>RequestTimeout</Code><Message>Your socket connection to the server w (truncated...) RequestTimeout (client): Your socket connection to the server was not read from or written to within the timeout period. Idle connections will be closed. - <?xml version="1.0" encoding="UTF-8"?> <Error><Code>RequestTimeout</Code><Message>Your socket connection to the server was not read from or written to within the timeout period. Idle connections will be closed.</Message><RequestId>BE8141ACAF59BFF1</RequestId><HostId>TuWxrANb6UjQHgYYqJQd6MB3Wct/a2uik7QuxR/Xz62+tzPwaT8QrbE1KpnEvK3G7R9T3JlZugk=</HostId></Error>
Error continues for additional Parts
The output of your config.php file in /path/to/nextcloud (make sure you remove any identifiable information!):
PASTE HERE
The output of your Apache/nginx/system log in /var/log/____:
PASTE HERE
