[Michael9999]

I have a few vinyl windows that don't stay up. They are all along the same wall, so I don't know if that means the house is shifting, or it's just a coincidence.

I opened the bottom sash by releasing the springs at the top and then re-closed it - hoping that would help. It did not.

At the bottom of the sash, it is attached to a plastic piece on both the left and right that runs inside a track. The plastic pieces are not attached to a string. Other windows in the house have a string that connects to the plastic pieces and run along the side of the window. I don't know how to reattach the string to the window.

Any suggestions?

[Michael9999]

I figured it out. But can't figure out how to delete.. .
double hung vinyl window spring mechanism repair - DoItYourself.com Community Forums

I used a screw driver to unlock and pull up the plastic track and then pull down the string. Now, it works.

[hkstroud]

No need to delete. Others may find your post and solution helpful.