FTPS fail with tls: received record with version 3030 when expecting version 303

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1

What is the problem you are having with rclone?

I’m mounting a network drive mapped to a public FTP explicit over TLS server.

Every time I select a file or if I try to create a new file I get the following error:

ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 1/10: 1 error occurred:
* tls: received record with version 3030 when expecting version 303

since that everything gets unreliable.

Run the command 'rclone version' and share the full output of the command.

rclone v1.71.1

  • os/version: Microsoft Windows 11 Pro 24H2 24H2 (64 bit)
  • os/kernel: 10.0.26100.6725 (x86_64)
  • os/type: windows
  • os/arch: amd64
  • go/version: go1.25.1
  • go/linking: static
  • go/tags: cmount

Which cloud storage system are you using? (eg Google Drive)

FTP

The command you were trying to run (eg rclone copy /tmp remote:tmp)

rclone.exe mount ftps: X: --network-mode --vfs-cache-mode writes --no-check-certificate --links --dir-cache-time 0m5s --ftp-disable-tls13 --ftp-no-check-certificate

Please run 'rclone config redacted' and share the full output. If you get command not found, please make sure to update rclone.

```
[ftps]
type = ftp
host = XXX
user = XXX
pass = XXX
implicit_tls = true
port = 990
tls = false
explicit_tls = true
close_timeout = 0
data_close_timeout = 1m
```

A log from the command that you were trying to run with the -vv flag

```
2025/10/02 12:39:13 DEBUG : /winfsp-2.1.25156.msi: Flush: fh=0x2
2025/10/02 12:39:13 DEBUG : /winfsp-2.1.25156.msi: >Flush: errc=0
2025/10/02 12:39:13 DEBUG : /winfsp-2.1.25156.msi: Release: fh=0x2
2025/10/02 12:39:13 DEBUG : /winfsp-2.1.25156.msi: >Release: errc=0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Returning virtual modtime 2025-09-29 15:05:35 +0000 UTC
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >Getattr: errc=0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Returning virtual modtime 2025-09-29 15:05:35 +0000 UTC
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >Getattr: errc=0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: OpenEx: flags=0x0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Open: flags=O_RDONLY
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: >Open: fd=fluentbit-tapi-yaml.zip (r), err=<nil>
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >OpenFile: fd=fluentbit-tapi-yaml.zip (r), err=<nil>
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >OpenEx: errc=0, fh=0x2
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: Read: ofst=3190, fh=0x2
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 0 length 134217728
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Returning virtual modtime 2025-09-29 15:05:35 +0000 UTC
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >Getattr: errc=0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Returning virtual modtime 2025-09-29 15:05:35 +0000 UTC
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >Getattr: errc=0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: OpenEx: flags=0x0
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: Open: flags=O_RDONLY
2025/10/02 12:39:13 DEBUG : fluentbit-tapi-yaml.zip: >Open: fd=fluentbit-tapi-yaml.zip (r), err=<nil>
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >OpenFile: fd=fluentbit-tapi-yaml.zip (r), err=<nil>
2025/10/02 12:39:13 DEBUG : /fluentbit-tapi-yaml.zip: >OpenEx: errc=0, fh=0x3
2025/10/02 12:39:14 DEBUG : ftp://file.accedinatm.it:990: dial("tcp","151.8.217.93:50004")
2025/10/02 12:39:14 DEBUG : ftp://file.accedinatm.it:990: > dial: conn=10.100.170.104:61071->151.8.217.93:50004, err=<nil>
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: waiting for in-sequence read to 3190 for 20ms
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: aborting in-sequence read wait, off=3190
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: failed to wait for in-sequence read to 3190
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 0 to 3190 (fs.RangeSeeker)
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from 0 to 3190 length -1
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.Read at -1 length 2048 chunkOffset 3190 chunkSize 134217728
2025/10/02 12:39:14 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:14 DEBUG : ftp://file.accedinatm.it:990: Connecting to FTP server
2025/10/02 12:39:14 DEBUG : ftp://file.accedinatm.it:990: dial("tcp","file.accedinatm.it:990")
2025/10/02 12:39:14 DEBUG : ftp://file.accedinatm.it:990: > dial: conn=10.100.170.104:61072->151.8.217.93:990, err=<nil>
2025/10/02 12:39:14 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:14 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:14 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:14 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:14 DEBUG : /: Opendir:
2025/10/02 12:39:14 DEBUG : /: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:14 DEBUG : /: >OpenFile: fd=/ (r), err=<nil>
2025/10/02 12:39:14 DEBUG : /: >Opendir: errc=0, fh=0x4
2025/10/02 12:39:14 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:14 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:14 DEBUG : /: Releasedir: fh=0x4
2025/10/02 12:39:14 DEBUG : /: >Releasedir: errc=0
2025/10/02 12:39:14 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:14 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:14 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:14 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:14 DEBUG : /: Opendir:
2025/10/02 12:39:14 DEBUG : /: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:14 DEBUG : /: >OpenFile: fd=/ (r), err=<nil>
2025/10/02 12:39:14 DEBUG : /: >Opendir: errc=0, fh=0x4
2025/10/02 12:39:14 DEBUG : /: Releasedir: fh=0x4
2025/10/02 12:39:14 DEBUG : /: >Releasedir: errc=0
2025/10/02 12:39:15 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:15 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:15 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:15 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:15 DEBUG : /: Opendir:
2025/10/02 12:39:15 DEBUG : /: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:15 DEBUG : /: >OpenFile: fd=/ (r), err=<nil>
2025/10/02 12:39:15 DEBUG : /: >Opendir: errc=0, fh=0x4
2025/10/02 12:39:15 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:15 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:15 DEBUG : /: Releasedir: fh=0x4
2025/10/02 12:39:15 DEBUG : /: >Releasedir: errc=0
2025/10/02 12:39:15 DEBUG : ftp://file.accedinatm.it:990: dial("tcp","151.8.217.93:50009")
2025/10/02 12:39:15 DEBUG : ftp://file.accedinatm.it:990: > dial: conn=10.100.170.104:61073->151.8.217.93:50009, err=<nil>
2025/10/02 12:39:15 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:15 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:15 DEBUG : /: Getattr: fh=0xFFFFFFFFFFFFFFFF
2025/10/02 12:39:15 DEBUG : /: >Getattr: errc=0
2025/10/02 12:39:15 DEBUG : /: Opendir:
2025/10/02 12:39:15 DEBUG : /: OpenFile: flags=O_RDONLY, perm=-rwxrwxrwx
2025/10/02 12:39:15 DEBUG : /: >OpenFile: fd=/ (r), err=<nil>
2025/10/02 12:39:15 DEBUG : /: >Opendir: errc=0, fh=0x4
2025/10/02 12:39:15 DEBUG : /: Releasedir: fh=0x4
2025/10/02 12:39:15 DEBUG : /: >Releasedir: errc=0
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 1/10: 1 error occurred:
        * tls: received record with version 3030 when expecting version 303

2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 2/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 3/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 4/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 5/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 6/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 7/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 8/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 9/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: low level retry 10/10: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.seek from 3190 to 3190
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek close old failed: file already closed
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.RangeSeek from -1 to 3190 length -1
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ChunkedReader.openRange at 3190 length 134217728
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Read seek failed: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Read error: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 ERROR : IO error: open: local error: tls: protocol version not supported
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Read: n=-5
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: Getattr: fh=0x3
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: Returning virtual modtime 2025-09-29 15:05:35 +0000 UTC
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Getattr: errc=0
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: Flush: fh=0x2
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Flush: errc=0
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: Release: fh=0x2
2025/10/02 12:39:16 DEBUG : fluentbit-tapi-yaml.zip: ReadFileHandle.Release closing
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: Flush: fh=0x3
2025/10/02 12:39:16 ERROR : fluentbit-tapi-yaml.zip: ReadFileHandle.Release error: file already closed
2025/10/02 12:39:16 ERROR : IO error: file already closed
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Release: errc=-5
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Flush: errc=0
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: Release: fh=0x3
2025/10/02 12:39:16 DEBUG : /fluentbit-tapi-yaml.zip: >Release: errc=0
```
2

welcome to the forum,

implicit_tls = true

is that a valid flag ?

make sure simple command work, such as rclone copy

rclone ftp support relies on a third party and have not been updated in over a year.
the ftp remote is the most troublesome in the forum.

will get much better support for sftp servers, including modtime and file verification using checksums.

3

This indicates something is wrong with the tls handshake

Try a lower tls level with

  --ftp-disable-tls13          Disable TLS 1.3 (workaround for FTP servers with buggy TLS)

There are other tls flags you can try too

4

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