How to unlock childproof lock - Washing Machines

Possibly holding the options button for 5 seconds. (Holding the Start button said not to work.)

https://www.justanswer.com/uk-appliance/5lay7-siemens-16-79-washing-machine-cannot-de-activate.html

There should not be a childproof lock on your microwave.
However, it is remotely possible that there is electrical failure preventing the door opening.
Most, not all, microwaves can be taken apart with screws with the door closed.
See if you can do yours.
You should find the latch holding the door is broken or stuck or whatever.
God bless your efforts.

hold down the mode button and the up arrow button at the same time

Here are a couple of possible reasons it stopped and solutions from the manual.

Adding/removing laundry in standby mode

If you want to add or remove laundry into/from your machine after the drying programme has
started, put the machine into Pause mode by pressing the START/PAUSE/CANCEL button. The
drying process will stop. Open the door at Pause position and close it again after adding or
removing laundry. Press START/PAUSE/CANCEL button to start the programme.

Any laundry added after the drying process was started may cause the already dried clothes in
the machine to intermingle with wet clothes and the result will be wet laundry after the drying
process is over.
It is not recommended to add laundry after the programme is started as it will increase the
programme time and energy consumption.

Childproof lock

There is a childproof lock to prevent any programme interruption due to the pressing of keys
while the programme is on. The loading door and all keys except the ON/OFF key on the panel are
deactivated when the childproof lock is active.
In order to activate the childproof lock, press on the StARt/PAUSe/CANCel and BUzzeR CANCel
buttons simultaneously for 3 seconds.

Fig.6 Using the
childproof lock

To start a new programme after the programme is over or to interrupt the
programme, the childproof lock should be deactivated.
To deactivate the childproof lock, press the same buttons for 3 seconds.

Two beeps will sound when the childproof lock is activated. A single beep
will sound when the lock is deactivated.

I was able to view the manual by a Google search and the third item on the Google search list was the manual, but it would only come up by selecting "quick view", otherwise it would crash the Acrobat reader plugin.

IF YOU OPEN THE BACK DOOR THERE SHOULD BE A SMALL LATCH THERE ON THE DOOR ITSELF SHOULD SAY LOCK AND UNLOCK SWITCH TO UNLOCK

May I get the make and model # to help you more.

hold the lock button down for three seconds and it will release

To UNLOCK it, press Stop/Clear 3 times.
To LOCK it, press Start 3 times.

You can download your owner's manual here:
http://techdocs.panasonic.co.uk/GetDoc.aspx?did=125787&fmt=pdf&lang=en&src=3

We're happy to help and we appreciate your thoughtful rating of our answer.

Hello mine is a WM14S79BUK but i think it works on most recent models with lcd display.

I have to hold the down button on the option buttons for 5 seconds to activate child lock or unlock

it's worth A TRY

Hope this helps