Inside glass fell out , how do i glue it back.

That part actually glues on. The glue is here: http://ovendoorglue.co.uk/2011/06/hotpoint-oven-door-repairs-customer-reviews-of-oven-door-glue/

I am afraid that yours is a common problem. The front glass normally has some small brackets glued to the inside face, which then locate into the door frame. The link will take you to a site that sells oven door glue

You need a specialist high temperature glue - one that works on glass.
Try the oven glue provided at ovendoorglue.co.uk they also have a website in the USA ovendoorglue.com which ships worldwide.

Hi Try not to open door with handle as this may cause to glass to smash. When you open the door you will see two pin sticking forward near the top of the door just further back on the top of the door is two small barbs push down on these barbs located in line but further back from the pins.This will release the top of the outer door.The bottom of the glass is hooked into the hinge. with the top released lift door glass away.You should find screw in inner door refit screw with some loctite.

Hi,
You need a high temperature silicone adhesive specific for the job. No point using epoxies, they will not give you a long term solution and you will waste time and money.
This company makes a glass oven door repair kit that will do the job for you.

You will find sets of screws ether on the outside edge of the door OR on the inside panel. You can NOT! use any glue to "seal" the Glass this will make everything smell like the sealant you picked to use. your door was probably used as a resting spot for something heavy and caused the doors skin to be bent OR when you Cleaned the oven with the clean feature it caused the door to warp. Your option is to get a replacement part to fix the problem you can stop by any appliance parts shop and ask them what the best thing to do is and/or buy the part there you can "pull the door" off the hinges by lifting the door straight up at you and take the part to the stop for help and or replacement

You should be able to repair your existing door. Have a look around the perimeter of the door to see if there are any screws, particularly near the handle. You are looking to take the front fascia off the door, so that you can access the inside. Most doors have the front fascia held on by small brackets glued to the back of the glass that clip on to a fixing on the internal door. The top of the fascia is normally held in place by the handle. Once you have the front of the door off you can retrieve the piece of glass that has fallen out. You will almost certainly find that the glass has come away from the adhesive that was used to hold it in place. You will need to clean up the glass and the metal door and re-stick the glass using a high temperature oven door glue

that is your heat safety glass if the outer pane is still there,you will need to dismantle the oven door and reseat it in its frame in the oven door,the screws are on top of door and on inside when door is down,im sure you'll find it..and dont run self clean w/o safety glass in place,outer glass wont take the extreme heat of self clean feature

You Can buy Heat Resistant Glue at Espares.co.uk
Worked for me!