|work| Cracks Under Windows

These are usually cosmetic. If the crack is less than 1/8th of an inch wide and runs vertically, it is likely the result of minor settling or drywall tape failing. These can typically be patched and painted. Diagonal Cracks

The fix depends entirely on the root cause. Never patch a crack until you are sure the movement has stopped, or the crack will simply reappear within months. For Cosmetic Drywall Cracks: cracks under windows

Use a utility knife to slightly widen the crack into a "V" shape so it can hold the new compound. These are usually cosmetic

For brick, you may need to "grind out" the cracked mortar and replace it with fresh mortar (repointing). For Structural Issues: cracks under windows