Card Blockers

Card blocker allows you to block cards with a specific reason. It informs about the problem with completion of the task. Create multiple card blockers to make the standstill reasons explicit and to categorize your problematic work.

You cannot change the card status until the card is blocked.

If the card is blocked because of you, you won’t be able to miss it.

current blockers

There are three types of card blockers:

  • local blocker – created and used only at one board
  • global blocker – generally available at every board
  • on demand blocker – global blockers that are available at the board after adding it by the board owner

The difference between the first one and the other two is very simple. Global card blockers usage can be monitored from the higher level. If you decide to use a local blocker instead, only board members will know about it.

How to create a new card blocker?

Learn how to create a new card blocker (using existing card blockers is described in the following part). 

Only board owners can create blockers in a board.

Try this feature at your work.

  1. Select more button (three dots) and open board menu.
  1. Go to  Settings.
  2. Select Blocker types.

You can create a Local blocker or add an existing On demand blocker to the board:

  • Local blocker – this type can be created, deleted and edited only by the board owner. It exists locally in the board. Every board member can see it and add it to a card.
  • On demand blocker – When this type of blocker is created in KanBo, every board owner can choose to add it to the board they manage. Only then can others see it.
  1. Press + Add.
  2. Type the name and description of the blocker (if local blocker chosen).
  3. Click on Add.

Your blocker will be now visible with the use count information.

Using card blockers

Every card member can block a card with the available card blockers. 

In order to block the card:

  1. Go to the card you want to block.
  2. Open card menu by pressing more button (three dots).
  3. Select Block.
  1. Select the blocker.

Note, that you can choose global or local blocker.

  1. Attach a person responsible and a reason for using a blocker (optional).
  2. Click on Block.

Your card will be indicated as blocked in card’s and board’s view.

blocked card inside

In order to unblock the card:

  1. Enter the card.
  2. Hover over the blocker info section.
  3. Press more (three dots).
  4. Select Unblock.

Current card blockers

If you’re the person responsible for some blockers, you will see a section called My blockers. It is located on the top bar. Next to the icon appears the counter of blocked cards.

Here you can see all blockers which you are responsible for.

The counter indicates the blocked cards by you in the order of impact. Impact will be calculated based on the relations and due dates.

Managing card blockers

Change the name and description of the blocker. Remove it when it is not needed anymore.

Only board owners can edit and remove blockers in a board.

How to edit a card blocker?

  1. Go to Board Settings.
  2. Select Blocker types.
  3. Click on the blocker you would like to edit.

You can change its name and description here.

How to remove a card blocker?

  1. Go to Board Settings.
  2. Select Blocker types.
  3. Hover over the blocker and click on the more (three dots) button.
  4. Now select Remove.


Use card blockers. It allows you to block a card and informs about the problem with completion of the task. 

Only board owners can create local card blockers in a board. They can also add on-demand blockers to the board by selecting them from global card blockers.

A local blocker is created and used only within one board, while a global blocker is available at every board in KanBo.

You need the Global Settings role to manage global card blockers. Global card blockers can be edited, removed or created in the KanBo Settings.

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