My lens stopped working in Auto Focus mode. I can take a picture in manual but I can't seem to focus clearly. I prefer using auto focus for my everyday pictures, but the lens will not work. I am sure it is a problem with the lens as the camera works just fine with my other lens. I don't know if I did something with the settings or what. Please advise.

Are you using an auto-focus m4/3 lens? I have about 20 lenses for this camera and only 1 of them is an auto-focus m4/3 lens. I have an adapter so I can use my 4/3 lenses on it in auto-focus mode along with other various mounts (including cctv) that do not support auto-focus. So if you are using a non-auto-focus lens, you will need to manually focus the pictures.
If you are certain it is an auto-focus lens, are you sure you have it set to auto-focus?
What settings do you have your camera set to (aperature mostly is what I'd like to know)? Try adjusting your aperature to be small (to increase your DOF).
Also what lens are you using and what is your focal distance? It could be your lens has a larger or shallower focal distance than what you are trying to achieve (like a macro lens doesn't work that great for landscape photography or a telephoto lens doesn't work great for macro photography).
Last thought: is your lens or sensor dirty? A dirty lens can cause focusing issues if it is REALLY dirty and a dirty sensor can too (sensor is a bigger pain to clean. I strongly recommend taking it to the pros as they scratch really easily). Dirty lenses can be cleaned with a blower and a lint free cloth and rubbing alcohol if those 2 things don't clear it out.

The camera will not take a picture in P, S, or A if the camera is in Auto Focus mode - and is unable to focus. Make sure that the Auto / Manual focus switch on the camera body AND the lens are BOTH in an Auto Focus mode. A tip off would be that you do not hear the lens focus motor running while trying to find focus.

If you do hear the focus motor, you may not have sufficient light on the subject for the camera to find a contrast "edge". In this case, the focus motor will hunt from where ever it is all the way in one direction, and then all the way in the other - trying to find focus. You'll need to provide more light or if you have the focus assist lamp (on the front of the camera) enabled - make sure your fingers are not blocking it while 1/2 pressing the shutter.

You can take pictures "all day long" in Manual Focus mode regardless of whether the subject is in focus or not. The lower left corner has a green circle or disc that indicates proper focus. Otherwise, a green triangle shape will be visible close by.

More info on Focus is available here. I hope this helps and good luck! Please rate my reply. Thanks.

My HTsi Plus never seems to be able to Auto Focus on a subject, so when you push the shutter button half-way, it just flashes the focus indicator (telling you it is unable to focus). Try switching over to the "Manual Focus" mode. On the front of the camera there is a button labeled "AF/M". Push that button to switch to manual focus. If the camera is in manual focus, the external LCD screen will say "M.Focus". Now try to snap a shot. If that still does not work, there may be something wrong with the camera or the lens. So, try using a different lens in manual focus mode. If it still does not work, then I would say the problem is with the camera itself.

It sounds like the circuit board flex has gone bad, It folds back and forth when you zoom the lens, And needs to be replaced by a repair shop and readjusted. Tony

Check if you have any of following issues
1. Lens is not AF or AF-S
2. Try flicking the lens switch from A to M and back to A again, might solve any contact issues
3. In the menu system also you can navigate to select the manual or auto focussing. if this got set to 'Manual' mode by mistake the camera will not autofocus even if the lens switch is in Auto mode.

You want to charge people for a membership to get answers from your site
but you want me to "tell you how I did it" for free. Hmmmmmm?

The lens AF mode is not working. What lens is it you are using?

It is not a camera issue but a lens issue. Try a different lens to be certain.

The G series lenses won't work in AF mode on the newer, entry-level Nikons. They require the DX series.

I had the same problem. My issue was with all my lenses. I solved it by going to the menu and selecting the custom setting menu (pencil icon). Then from the right menu select the AE-L/AF-L and press OK. Then make sure it is set on AE/AF Lock. Presto...all my lenses worked on auto-focus.

Is there a micro focus switch on the lens
On my lens if switch to Micro Mode the Auto focus is disabled, Also it is a stupid question but you are using a AF lens and not a xi series or manual focus lens.