2026.02.28 (Ver 5.6.0)$$$Changes$$$Character width can now be specified by the user for each Unicode code point. $$$When specify character width settings in TERATERM.INI; Use character-by-character width override settings check box becomes available; in the Encoding tab (Additional settings > Encoding) .$$$Added support for dumb terminal emulation.$$$Added dumb to Terminal ID in the Terminal tab (Setup > Terminal...).$$$In the Serial Port tab (Setup > Serial port...); added the ability to toggle the RTS and DTR control signals between low and high; and to configure RTS and DTR flow control. $$$Reduced occurrences of lost incoming data on high-bit-rate serial connections.$$$Added support for receiving binary data and save it as a file. $$$Added Receive file dialog (File > Receive file...).$$$Added macro command recvfile.$$$Command-line options of Tera Term launched from Duplicate session menu are no longer accessible. $$$File > Change directory... menu can now be selected even when the session is disconnected. $$$In the Encoding tab (Additional settings > Encoding); Ambiguous Characters width and Override Emoji Characters width settings are no longer update automatically when the character encoding is changed. $$$Open Settings > Personalization > Fonts instead of opening the %WINDIR%\Fonts folder if possible when opening Windows font settings in the Font tab (Setup > Font...). $$$Add the Plugin tab (Additional settings > Plugin). Enabled plugin loading settings. $$$Added broadcast.log to Setup directory (Setup > Setup directory...). $$$Setup directory (Setup > Setup directory...) is now resizable. $$$Susie plugin is now usable with the arm64 version of Tera Term. $$$Bug fixes$$$Fixed a bug that prevented the transfer dialogs for Kermit; XModem; YModem; ZModem; B-Plus and Quick-VAN from being closed when a session was disconnected. $$$Fixed an issue where the serial port data length and flow control settings were not reflected in the enabled/disabled state of the File > Transfer > YMODEM; ZMODEM; B-Plus; Quick-VAN menu items. This bug was introduced in 4.66. $$$Fixed an issue Cancel button in printing dialog is not working when printing from print menu (File > Print...).$$$Fixed an issue where the Alt+T access key sent the AYT (Are You There) command even when the active TCP/IP connection was not TELNET. $$$Fixed a bug that caused FTHideDialog in TERATERM.INI to stop working. This bug was introduced in 5.0. $$$Fixed an issue where Tera Term crashes when using susie plugin. $$$The error dialog is no longer shown when the PC fails to create the file during execution of reception macro commands (kmtrecv; ymodemrecv; bplusrecv and quickvanrecv). $$$Misc$$$Upgraded TeraTerm Menu to 1.21.$$$Upgraded TTSSH to 3.6.0.$$$Upgraded Inno Setup that is used for the installer to 6.7.1.

Tera Term 5.5.2$$$Major changes$$$Fixed an issue where the window was not hidden when ttermpro was launched with the /V option. This bug was introduced in 5.4.1. (issue #975)$$$Fixed sending data using send; sendln; sendbinary; sendtext macro commands follows local echo settings. This bug was introduced in 5.0. (issue #147)

Tera Term 5.5.2$$$Major changes$$$Fixed an issue where the window was not hidden when ttermpro.exe was launched with the /V option. This bug was introduced in 5.4.1. (issue #975)$$$Fixed sending data using send; sendln; sendbinary; sendtext macro commands follows local echo settings. This bug was introduced in 5.0. (issue #147)

Tera Term 5.5.1$$$$$$Major changes$$$$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed an issue where SCP file transfer became slow. This bug was introduced in 3.4.1 (Tera Term 5.4.1). (issue #883)$$$$$$Bug fixes$$$Fixed settings not updating to match the log file name after user modification in the Log dialog box (to input the log file name). (issue #896)$$$Fixed an issue where a comment could not be added (File > Comment to Log...) while binary logging. (issue #863)$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed ZMODEM receiving stop when file writing was impossible. (issue #917)$$$Modified the CR LF sent in the ZMODEM hex header from 0x8D 0x8A to 0x0D 0x8A. (issue #889)$$$Fixed Print (File > Print...) is not Unicode compatible. (issue #815)$$$Misc$$$Upgraded TTSSH to 3.5.1.

Tera Term 5.5.1$$$$$$Major changes$$$$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed an issue where SCP file transfer became slow. This bug was introduced in 3.4.1 (Tera Term 5.4.1). (issue #883)$$$$$$Bug fixes$$$Fixed settings not updating to match the log file name after user modification in the Log dialog box (to input the log file name). (issue #896)$$$Fixed an issue where a comment could not be added (File > Comment to Log...) while binary logging. (issue #863)$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed ZMODEM receiving stop when file writing was impossible. (issue #917)$$$Modified the CR LF sent in the ZMODEM hex header from 0x8D 0x8A to 0x0D 0x8A. (issue #889)$$$Fixed Print (File > Print...) is not Unicode compatible. (issue #815)$$$Misc$$$Upgraded TTSSH to 3.5.1.

Tera Term 5.5.1$$$$$$Major changes$$$$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed an issue where SCP file transfer became slow. This bug was introduced in 3.4.1 (Tera Term 5.4.1). (issue #883)$$$$$$Bug fixes$$$Fixed settings not updating to match the log file name after user modification in the Log dialog box (to input the log file name). (issue #896)$$$Fixed an issue where a comment could not be added (File > Comment to Log...) while binary logging. (issue #863)$$$Fixed Tera Term crashes when selecting multiple files using Kermit or Quick-VAN or YMODEM or ZMODEM send. (issue #9; #942)$$$Fixed CANCEL is not implemented when YMODEM receiving. (issue #786)$$$Fixed ZMODEM receiving stop when file writing was impossible. (issue #917)$$$Modified the CR LF sent in the ZMODEM hex header from 0x8D 0x8A to 0x0D 0x8A. (issue #889)$$$Fixed Print (File > Print...) is not Unicode compatible. (issue #815)$$$Misc$$$Upgraded TTSSH to 3.5.1.

Tera Term 5.5.0$$$$$$Major changes$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Added support for SSH2 key exchange methods: curve25519-sha256; curve25519-sha256@libssh.org (issue #89)$$$$$$Other Changes$$$Added support for xterm(SGR-Pixels) style extended mouse tracking mode. (issue #575)$$$Sequences OSC 17; 19; 117; 119 implemented. (issue #532)$$$Added VT220 to Terminal ID. (issue #623)$$$Updated Unicode information to Unicode 17.0. (issue #844)$$$Add available character encodings. (issue #510)$$$The delay settings have been implemented to ensure they are applied when sending files via drag & drop. (issue #594)$$$Added Hide dialog button on Log dialog box (displayed while logging). (issue #630)$$$Added [UI] tab in Additional settings and moved UI languages and Dialog font setting. (issue #460)$$$Added a setting to not map DEC Special Graphics; and enabled the setting to be saved in an INI file. (issue #538)$$$Added selections for display options to font list in font dialog for each tab. These selections are not saved. (issue #460)$$$Show or hide proportional fonts$$$Show or hide hidden fonts$$$ListHiddenFonts entry in TERATERM.INI; used to show or hide hidden fonts when selecting a VT font; was removed.$$$API for drawing option saved in TERATERM.INI. (issue #812)$$$delay settings have been incorporated to ensure they are applied during the execution of the sendfile macro command. (issue #594)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Bug fixes$$$Terminal ID VT100J; VT102J; and VT220J were not selectable Since 5.3; which remove Language setting. (issue #623)$$$Fixed Device Attribute for VT320; VT520; VT525. (issue #689)$$$Fixed crash when using [Kermit]-[Get]. (issue #785)$$$The issue where some windows were not displayed in the foreground after right-clicking in the Broadcast command dialogs window list and selecting Bring selected window to foreground has been fixed. (issue #736)$$$Broadcast command dialog is not Unicode compatible. (issue #500)$$$Fixed printing from TEK Window is not working. This bug was introduced in 5.0. (issue #842)$$$Fixed the issue where the send(ln)broadcast; send(ln)multicast and sendkcode macro commands could lose sent data. (issue #774)$$$Misc$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Changed filenames of the existing language files. (issue #825)$$$Now the previous language filename is invalid.$$$The setup file in users setup files folder is not modified by the installer. Please select the language you want to use in the UI settings; and save the setup file explicitly.$$$Added Portuguese (Brazil) language file (pt_BR.lng). (issue #589)$$$Added Italian language file (it_IT.lng). (issue #751)$$$Added Turkish language file (tr_TR.lng). (issue #748)$$$Upgraded TTSSH to 3.5.0.$$$Added TTXChangeFontSize. (issue #599)$$$Added device attributes list to the manual. (issue #689)$$$

Tera Term 5.5.0$$$$$$Major changes$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Added support for SSH2 key exchange methods: curve25519-sha256; curve25519-sha256@libssh.org (issue #89)$$$$$$Other Changes$$$Added support for xterm(SGR-Pixels) style extended mouse tracking mode. (issue #575)$$$Sequences OSC 17; 19; 117; 119 implemented. (issue #532)$$$Added VT220 to Terminal ID. (issue #623)$$$Updated Unicode information to Unicode 17.0. (issue #844)$$$Add available character encodings. (issue #510)$$$The delay settings have been implemented to ensure they are applied when sending files via drag & drop. (issue #594)$$$Added Hide dialog button on Log dialog box (displayed while logging). (issue #630)$$$Added [UI] tab in Additional settings and moved UI languages and Dialog font setting. (issue #460)$$$Added a setting to not map DEC Special Graphics; and enabled the setting to be saved in an INI file. (issue #538)$$$Added selections for display options to font list in font dialog for each tab. These selections are not saved. (issue #460)$$$Show or hide proportional fonts$$$Show or hide hidden fonts$$$ListHiddenFonts entry in TERATERM.INI; used to show or hide hidden fonts when selecting a VT font; was removed.$$$API for drawing option saved in TERATERM.INI. (issue #812)$$$delay settings have been incorporated to ensure they are applied during the execution of the sendfile macro command. (issue #594)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Bug fixes$$$Terminal ID VT100J; VT102J; and VT220J were not selectable Since 5.3; which remove Language setting. (issue #623)$$$Fixed Device Attribute for VT320; VT520; VT525. (issue #689)$$$Fixed crash when using [Kermit]-[Get]. (issue #785)$$$The issue where some windows were not displayed in the foreground after right-clicking in the Broadcast command dialogs window list and selecting Bring selected window to foreground has been fixed. (issue #736)$$$Broadcast command dialog is not Unicode compatible. (issue #500)$$$Fixed printing from TEK Window is not working. This bug was introduced in 5.0. (issue #842)$$$Fixed the issue where the send(ln)broadcast; send(ln)multicast and sendkcode macro commands could lose sent data. (issue #774)$$$Misc$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Changed filenames of the existing language files. (issue #825)$$$Now the previous language filename is invalid.$$$The setup file in users setup files folder is not modified by the installer. Please select the language you want to use in the UI settings; and save the setup file explicitly.$$$Added Portuguese (Brazil) language file (pt_BR.lng). (issue #589)$$$Added Italian language file (it_IT.lng). (issue #751)$$$Added Turkish language file (tr_TR.lng). (issue #748)$$$Upgraded TTSSH to 3.5.0.$$$Added TTXChangeFontSize. (issue #599)$$$Added device attributes list to the manual. (issue #689)$$$

Tera Term 5.5.0$$$$$$Major changes$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Added support for SSH2 key exchange methods: curve25519-sha256; curve25519-sha256@libssh.org (issue #89)$$$$$$Other Changes$$$Added support for xterm(SGR-Pixels) style extended mouse tracking mode. (issue #575)$$$Sequences OSC 17; 19; 117; 119 implemented. (issue #532)$$$Added VT220 to Terminal ID. (issue #623)$$$Updated Unicode information to Unicode 17.0. (issue #844)$$$Add available character encodings. (issue #510)$$$The delay settings have been implemented to ensure they are applied when sending files via drag & drop. (issue #594)$$$Added Hide dialog button on Log dialog box (displayed while logging). (issue #630)$$$Added [UI] tab in Additional settings and moved UI languages and Dialog font setting. (issue #460)$$$Added a setting to not map DEC Special Graphics; and enabled the setting to be saved in an INI file. (issue #538)$$$Added selections for display options to font list in font dialog for each tab. These selections are not saved. (issue #460)$$$Show or hide proportional fonts$$$Show or hide hidden fonts$$$ListHiddenFonts entry in TERATERM.INI; used to show or hide hidden fonts when selecting a VT font; was removed.$$$API for drawing option saved in TERATERM.INI. (issue #812)$$$delay settings have been incorporated to ensure they are applied during the execution of the sendfile macro command. (issue #594)$$$Added macro commands setserialdelaychar and setserialdelayline to set transmission delays for the serial port. (issue #437)$$$Bug fixes$$$Terminal ID VT100J; VT102J; and VT220J were not selectable Since 5.3; which remove Language setting. (issue #623)$$$Fixed Device Attribute for VT320; VT520; VT525. (issue #689)$$$Fixed crash when using [Kermit]-[Get]. (issue #785)$$$The issue where some windows were not displayed in the foreground after right-clicking in the Broadcast command dialogs window list and selecting Bring selected window to foreground has been fixed. (issue #736)$$$Broadcast command dialog is not Unicode compatible. (issue #500)$$$Fixed printing from TEK Window is not working. This bug was introduced in 5.0. (issue #842)$$$Fixed the issue where the send(ln)broadcast; send(ln)multicast and sendkcode macro commands could lose sent data. (issue #774)$$$Misc$$$Now x64 and arm64 binaries are provided. (issue #228)$$$Changed filenames of the existing language files. (issue #825)$$$Now the previous language filename is invalid.$$$The setup file in users setup files folder is not modified by the installer. Please select the language you want to use in the UI settings; and save the setup file explicitly.$$$Added Portuguese (Brazil) language file (pt_BR.lng). (issue #589)$$$Added Italian language file (it_IT.lng). (issue #751)$$$Added Turkish language file (tr_TR.lng). (issue #748)$$$Upgraded TTSSH to 3.5.0.$$$Added TTXChangeFontSize. (issue #599)$$$Added device attributes list to the manual. (issue #689)$$$