Master Password+ Version History

47 versions

Be careful with old versions!

These versions are displayed for reference and testing purposes. You should always use the latest version of an add-on.

Version 1.30.7 202.8 KiB Works with Thunderbird 5.0 - 62.*

v1.30.7 (2018-10-25)
! an extra separator shown in MP+ menu when MP is not set
! MP+ icon doesn't change after MP password was first set or removed
! Unexpected modal dialogue, in lieu of banner 'Master password prompt was blocked' (issue #146)
! Can't login from window with "Disable lock of this window" enabled after lock (issue #148)

Version 1.30.6 202.6 KiB Works with Thunderbird 5.0 - 62.*

! MP prompts are not suppressed (issue #145)

Version 1.30.5 202.5 KiB Works with Thunderbird 5.0 - 62.*

v1.30.5 (2018-08-17)
! KeePass secure desktop doesn't work if "logout/lock on workstation lock" enabled (issue #144)

v1.30.4 (2018-08-17)
! KeePass Secure Desktop on Windows OS doesn't work even when both "Logout/Lock on workstation lock" are disabled (issue #143)

Version 202.4 KiB Works with Thunderbird 5.0 - 62.*

! options window fail on non-english systems (issue #142)

Version 1.30.2 202.0 KiB Works with Thunderbird 5.0 - 62.*

! failed on Linux and Mac OS, due to folder defaults/Preferences had capital letter (issue #141)
* support email has been changed

Version 1.30 202.0 KiB Works with Thunderbird 5.0 - 62.*

+ logout/lock when computer is locked (Windows OS only)
* tools menu item is now a fly-out menu, no right click required
! backup settings were saved in Latin1 charset, instead of UTF8 characters
! TB crash when mp showed on startup (issue #136)
! MasterPasswordPlus fails for Thunderbird 58 (issue #135, issue #140)
! unable reset hotkeys to default on Linux

Version 1.29.2 214.1 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 56.*

Version 1.29.1 214.0 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 56.*

v1.29.1 (2017-12-06)
! when no master password is set and window locked, it was impossible to unlock it
! missing troubleshooting info in options window
! in TB number values in options couldn't be changed with mouse wheel
! runs again on FF58a1 and TB58a1 (issue #135)

Version 1.29 213.5 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 56.*

v1.29 (2017-10-29)
+ MP+ settings backup/restore
! MP dialog shown when browser locked and sync activated.
! block master passowrd prompts didn't work

this is probably the last update for Firefox, because mozilla is planning to prohibit submitting addons that are not compatible with FF57
it might still work in FF57 if you enable lagacy addons support with extensions.legacy.enabled in about:config
or switch to Waterfox ( or Palemoon (

Version 1.28.2 206.5 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 56.*

v1.28.2 (2017-08-31)
! in some cases overlay not properly initialized on non-browser windows, giving error in console.
! if addon was first installed as v1.22 and newer, after addon update changes log notification settings was ignored
* after update changes log expands all versions between current and last updated from version (if viewed during first session after update)

Version 1.28.1 205.8 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 56.*

v1.28.1 (2017-08-30)
Firefox 57+ is no longer supported and never will be, unless mozilla pulls it's head out of it's ass, but by then it will be too late after it's aliened developers.
If it works - good, if not - switch to Waterfox or Palemoon.
! errors in console when notificaiton changes log shown after update

v1.28 (2017-08-30)
+ when protect options is enabled manually changes to about:config settings require enter master password (unless already logged in) (issue #131)
! MP dialog would not properly show counter of suppressed dialogs

v1.27 (2017-08-25)
+ typing current password in "Change Master Password" window without typing new password changes "ok" button to "remove"
! urlbar simulation in options would not show current position when saved position ID is no longer exists

v1.26 (2017-08-12)
+ sync after unlock (FF56+, controlled via extensions.masterPasswordPlus.unlockSync hidden option) (issue #122)
+ language indicator and non-latin warning now available on lock screen (see changes in v1.15.1 for more info)
! Missing title at MP prompt (issue #127)
! some icons in url bar simulation in option shown too big
! errors when debug is enabled and console automatically opens on startup
! blocked prompts counter introduced in v1.18 not shown
! enter key doesn't work in locked non-browser windows
! global hotkeys no longer worked
! most timeout fields in options would not save
* when debug mode enabled and browser console opened on startup, it shows message in browser console explaining how to disable it

Version 1.25 204.3 KiB Works with Firefox 4.0 - 56.0a1, Thunderbird 5.0 - 56.0a1

+ Ukrainian language. Thanks to Artem Polivanchuk (issue #108)
+ Window identification string shows in locked window (issue #109)
+ improved displaying "Show in Address bar" icons in options
+ timeout input fields in options are now split into separate fields for days, hours, minutes and seconds
+ user idle sensitivy option
! Unable set/change master password (issue #120)
! MP+ icon position in address bar not updated until browser restart
! new options introduced in v1.23 are not disabled when options window is "protected" (issue #107)
! opening new window after browser was locked on startup and then logged out, locks all windows again for no reason (issue #110)
! window title not restored after locked window was unlocked {crossed fingers} (issue #91)
! Unable unlock when "locked on minimized" option enabled and some windows already minimized {can't reproduce anymore} (issue #61)
! unlocking minimized windows multiply number of thumbnails at taskbar on Windows 7+
! minimized window looses it's original position on screen after restart (issue #111)
! Change Master Password window content doesn't fit when opened from Firefox options (issue #115)
! timeout timer not properly displayed if set to over 24 hours
* browser console no longer locks when debug logging enabled
* timer in tooltip now show days and doesn't show "0" for hours/minutes

Version 1.23 175.2 KiB Works with Firefox 4.0 - 56.*, Thunderbird 5.0 - 53.0a1

+ MP prompt inside locked window (issue #83)
+ new options to disable password field in locked windows after NN failed attempts for NN seconds.
+ new option to lock/logout when computer goes to sleep (not all systems supported (issue #68)
+ ability prevent individual window from getting locked when global lock initiated (it still allows use "lock this window") extensions.masterPasswordPlus.nolockpersist hidden setting controls if such flag restored after restart (issue #99)
+ help tab in options
+ debug options (when activated debug, browser console automatically opens)
! incorrect default action used on toollbar button (issue #100)
! MP prompt buttons didn't fit into window (issue #102)
! window minimize/maximize/exit buttons are not visible when window is locked and browser.tabs.drawInTitlebar enabled
! window size changed when lock on minimize enabled and window minimized
! Window title not restored after locked window unlocked (issue #91)
! postbox v5.x support (issue #101)
! changes log popup shows incorrect changes preview when more then one window opened on startup
! Unable unlock when enabled Lock on minimize all windows and a window still minimized ((issue #105)

- extensions.masterPasswordPlus.lockignorefirstkey setting (issue #90)
* user activity is now detected globally - even when FF/TB not in focus (issue #95)
* optimized handling of changes in preferences via about:config
* submitting empty password no longer considered as incorrect and doesn't count towards failed attempts.

Version 1.22 179.0 KiB Works with Firefox 4.0 - 51.*, Thunderbird 5.0 - 51.0a1

+ experimental postbox support (
+ experimental e10s support
* collapsed by default changes of old versions in changes log (controlled via options menu at changes log page)
! possible errors related to changes log
! changes log link in about addon window would not always work
! Tab preview still show content when window locked on Windows 10 (8?) (issue #89)
! Change master password is broken when opened from Firefox options (issue #94)
! empty saved logins list when logged out (issue #85)

Version 1.21.6 160.3 KiB Works with Firefox 4.0 - 49.*, Thunderbird 5.0 - 48.0a1

! issue #88 (Unable change or delete master password) for real this time. Somehow the fixed file never got into the package in last version.
! issue #89 (Windows 10(8?) - (Tab preview still shows content when window is locked on Windows 10 (8?))

Version 1.21.5 160.0 KiB Works with Firefox 4.0 - 48.0a1, Thunderbird 5.0 - 48.0a1

! issue #88 (Unable change or delete master password)

Version 1.21.4 160.0 KiB Works with Firefox 4.0 - 48.0a1, Thunderbird 5.0 - 48.0a1

* different approach to show MP prompt on startup
* dropped support for FF <4.0 and TB <5.0
! timer didn't show more then 24 hours
! DOM Inspector window would not get locked
! missing options on FF29+
! issue #85 (Saved passwords list is empty)
! password prompt missing custom title and options button
! FF/TB 48 compatibility

Version 131.4 KiB Works with Firefox 3.6 - 45.*, Thunderbird 3.1 - 35.0a1

* flashing for a split a second prompt window is now less intrusive if visible at all.
! FF/TB 35 compatibility

Version 131.0 KiB Works with Firefox 3.6 - 28.*, Thunderbird 3.1 - 27.*

+ hidden option extensions.masterPasswordPlus.lockignorefirstkey, that controls when pressing a key on locked window: should it be passed to the MP prompt or not (controls a feature introduced in v1.20)
+ in Firefox/Thunderbird 8.0+ a link at General tab in options window to open all available settings
+ prompt to delete all settings when uninstalling MP+
! ignored forceprompt setting
! in some situations MP+ doesn't work in new windows
! error in console on non Vista/W7/W8 systems

Version 121.3 KiB Works with Firefox 3.6 - 22.0a1, Thunderbird 3.1 - 19.0a1

+ extensions.masterPasswordPlus.forceprompt setting (for advanced users). Users can now add windows to the list that require MP logined in.
! improved the way hotkeys append to non-main windows
! window title didn't change on lock in some windows
! in some cases on Windows Vista/7 locked window would still show it's content in taskbar preview
! locked window on Windows 7 with basic theme would loose all it's buttons
! active tab would not correctly load after session restore

Version 1.21.1-signed 120.1 KiB Works with Firefox 3.6 - 19.*, Thunderbird 3.1 - 19.0a1

+ option/about window icons
+ improved address bar position setting in options
+ most windows now will be locked and can be individually locked (hopefully it won't break compatibility with other extensions)
+ single window lock hotkey can now be set globally
+ contact information to about window and changes log
+ option to disable hotkeys
+ change master password window is now resize to fit the screen
* changes log will not open on first install
! incorrect unlock label showed when a window was individually locked, then unlocked and global lock occur
! possible freezing when MP dialog showed (mainly in Waterfox)
! attempting set hotkey that already being used by MP+ would trigger the action of the set hotkey
! in FF3.6 in some cases Change MP window would not be properly resized
! flickering side effect when minimized window getting locked on Windows Vista/7

Version 104.0 KiB Works with Firefox 3.6 - 19.0a1, Thunderbird 3.1 - 19.0a1

* changing prompt identification string in options will automatically update in all existing MP prompt windows
* updated Chinese translation
! no icon showed on toolbar button in TB
! MP+ would not detect MP prompt on non-english versions of FF and TB

Version 1.20.1-signed 103.8 KiB Works with Firefox 3.6 - 19.0a1, Thunderbird 3.1 - 19.0a1

+ customizable default MP+ button action
+ support for session manager extension's startup prompt
+ option for global lock / lock+logout hotkeys
+ option logout on minimize
+ option lock on minimize (a bit glitchy on Windows Vista/7 with Aero taskbar preview - window will minimize twice)
* minimum lock timeout is now 10 seconds
* new icons so they are easier recognized by color blind people (ugly, I know, so any new designs are welcome!)
! title of locked windows is not changed with some title-changing addons
! some issues with Vimperator and possible other addons
! cleaned up some style namespace pollution
! old name showed in about dialog box
! about dialog is now resizable
! pressing any key in locked window would pass keyboard event to the element that was focused before window locked. Now it passes to the MP dialog box instead so you can start typing immediately without waiting for the MP prompt to showup.
! no MP+ icon shown when added onto title toolbar in TB18
! incorrectly identifying generic password prompt as master password prompt
! global lock/unlock keys didn't work
! hotkeys were not shown in the MP+ menu in a new window
! Windows Vista/7 taskbar preview would show content of minimized locked windows. As a work around all minimized windows are now restored then minimized again, creating "flickering" side effect.

Version 98.0 KiB Works with Firefox 3.6 - 18.0a1, Thunderbird 3.1 - 15.*

! high CPU usage when locked
! freezing in some cases after TB was closed while in locked state and then started again

Version 1.19.1-signed 98.0 KiB Works with Firefox 3.6 - 14.0a1, Thunderbird 3.1 - 14.0a1

An emergency update for FF 3.6 users

+ German translation (Thanks to Stephan Navár)
* the way hotkey shown in menu
- dropped support for: FF 3.5, TB 3.0 and older
! in some languages text in change MP window didn't fit
! misspelling in unlock window message

Version 1.18.1-signed 93.0 KiB Works with Firefox 3.5 - 14.0a1, Thunderbird 3.0 - 14.0a1

+ show hotkeys in menu
+ support for source view, options and single message windows (in TB)
+ counter of how many MP prompts were blocked while one MP prompt window was opened (shows in window title)
! ignored setting on startup "Exit after NN incorrect passwords"
! cancel MP prompt on startup will lock windows, W7 taskbar preview still shows unlocked content
! some links in "About" window didn't work
! errors in console when opened view source window

Version 1.17.1-signed 92.0 KiB Works with Firefox 3.5 - 14.0a1, Thunderbird 3.0 - 14.0a1

+ bumped support for FF and TB Nightly 14.0a1
+ hidden setting extensions.masterPasswordPlus.locktransparent which controls transparency of the locked window in FF4 and newer
+ hidden setting extensions.masterPasswordPlus.lockbgimage which controls showing background image of the locked window in FF4 and newer
+ clicking anywhere in a locked window will show MP input box
+ hidden settings for TB: extensions.masterPasswordPlus.hidenewmailalert and extensions.masterPasswordPlus.hidenewmailballoon when enabled alert/balloon notifications for new mail will not be shown. The hidenewmailalert setting will also affect notification of "WebMail Notifier" addon on FF.
+ hidden setting for Windows OS only (thanks to Andrey Lokot for TabLang addon!): extensions.masterPasswordPlus.showlang which controls displaying current keyboard language. 0 = disabled, 1 = always shown, 2 = only when window is in full screen (F11)
! Windows 7 taskbar preview of the locked windows
! hotkey don't work properly from child windows
! icon at addons bar didn't change when cursor hovered over it
! extensions.masterPasswordPlus.nonlatinwarning setting ignored in MP prompt on startup
! non-latin character warning icon doesn't show after non-latin character entered
! double MP prompts on startup

Version 85.0 KiB Works with Firefox 3.5 - 13.0a1, Thunderbird 3.0 - 13.0a1

+ bumped support for FF nightly 9.0a1
+ bumped support for TB nightly 9.0a1
+ displaying changes log after each update can be disabled by hidden setting: extensions.masterPasswordPlus.showchangeslog
! changes log didn't open in TB
! links in "About" window in TB

Version 1.16.1-signed 84.0 KiB Works with Firefox 3.5 - 7.*, Thunderbird 3.0 - 5.*

+ support for FF nightly 7.0a1
+ support for TB 5
+ flashing icon at notification bar
+ dropdown menu on toolbar/statusbar buttons (no more context menu)
+ ability lock individual windows in TB with hotkeys
* prompt invoked by a locked window no longer has options button
! notification bar timeout wasn't reset after repeatedly blocked MP prompts
! possible double MP prompt when option "Ask for password on startup" is activated
! unlock button at locked window looked messed up on some themes
! on windows classic theme locking menu items would be barely visible when highlighted
! unable unlock individually locked window if MP prompt was already shown

Version 82.0 KiB Works with Firefox 3.5 - 7.0a1, Thunderbird 3.0 - 3.3a3pre

v1.15.4 (2011-04-05)
Just a stupid bug fix - custom identification string was displayed on any prompts, not only on master password prompt.

v1.15.3 (2011-03-31)
!Fixed: TB would freeze on startup if it was closed during locked state and "ask password on startup" is disabled
!Fixed: hotkey would not work in additional windows

v1.15.2 (2011-03-30)
!Fixed: extension is broken on some systems (I call a bs on this one, works fine on two test profiles and doesn't work on third, go figure...)
!Fixed: no identification string added in titlebar in MP prompt windows
!Fixed: notification bar icon would stop blinking after switching tabs