hello dears
when I insert question mark (?) in system menu in Telnet: system ?, it shows just some lines and stops working! what is the problem?

no one knows about that?

Please specify what RouterOS version are you using?
What device are you using?
I do not experience such behaviour when inserting "?" in terminal under "/system"

os version is 6.41
I use telnet on windows server 2012 R2 cmd.
in some cases I encountered with this error! in many others there is no error and problem!

os version is 6.41

Upgrade router to latest long-term (currently 6.44.5) ... and try again. Beware that upgrade might break some configuration, bridge setup has changed between 6.42 and 6.43.

Thank u.
I'll do it

os version is 6.41

Upgrade router to latest long-term (currently 6.44.5) ... and try again. Beware that upgrade might break some configuration, bridge setup has changed between 6.42 and 6.43.

I did it, but nothing changed! I think there is no way but resetting configurations!

os version is 6.41

Upgrade router to latest long-term (currently 6.44.5) ... and try again. Beware that upgrade might break some configuration, bridge setup has changed between 6.42 and 6.43.

I could not find any solution for this! So is there any way to use "print" command to show contents one-by-one; means it shows one line then stops till I press - for example - space key then shows another line...?

The issue is happening to me as well, but instead of telnet try ssh, or vice versa, i find more success when i switch protocol and get the results .