"bad message" error on uploading certain filenames with SFTP :: Support Forum

Mithaldu
Joined:: 2018-03-17
Posts:: 5
Location:: Germany

"bad message" error on uploading certain filenames with SFTP

2019-03-13 20:47

Tried to upload some files via SFTP and got the following error:

Bad message (badly formatted packet or protocol incompatibility).
Error code: 5
Error message from server: Bad message

This happens for example for this filename: "急上昇に載りました．．．朝通知きてびっくりして泣きながら録画しました．．．その一部始終をありのままに．．．視聴者さん、本当にありがとう。夢絶対叶えるよ私は。-goQVVwxr.zip" It also happens with more characters in the name, but removing the r at the end allows it to be uploaded.

This does not happen with SCP.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 40,567
Location:: Prague, Czechia

Re: "bad message" error on uploading certain filenames with SFTP

2019-03-15

Can you upload those files using any other SFTP client?

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Mithaldu

2019-03-15 10:42

Yep, Filezilla in SFTP mode can upload the file without issue.

It's also not related to total path length. Even uploading to / fails.

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martin◆ Site Admin
Joined:: 2002-12-10
Posts:: 40,567
Location:: Prague, Czechia

2019-03-15

Try changing the value of UTF-8 encoding for filenames:
https://winscp.net/eng/docs/ui_login_environment#utf

If it does not help, please post verbose WinSCP and FileZilla log file showing an upload of the same file.

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