

This. Some people don’t realise how ridiculously easy it is to change a lock when you can open the door with a key.
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Put the working key into the lock
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Undo this screw
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Turn the key slightly back and forth whilst pulling the cylinder out until it starts to come out. Then just pull it all out.
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Mark which side was front and back
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Measure from the middle locking mechanism of the cylinder to the ends.
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Find a lock with the same lengths. It’ll be like 60/40 (100mm total length).
6b. Optional: get one with a fixed turnkey on the inside.
- Replace lock by reverse.
I installed LTSC on a device recently. Very little effort for bloat free Windows.