Issue Opening Context Menu from Notification Area in Taskbar

Story starts as follow…

I am using a program, which runs in background & doing its job.
In case I want to change any settings, the only way I can do, is from its context menu.. which can be accessed by clicking its Icon, from the Notification Area of Taskbar. In fact, I can close this program only from that context menu…

I am using this program from almost last 1 yrs.. And all of a sudden, it stops displaying the context menu! Where it allows me to change settings, as well as to close the program. And I had no idea how to solved it! I tried to forcefully close the program from the Task Manager.. tried to restart my PC.. But no luck.. then I contacted its developer, but we didn’t get a clue, whats going on! Then today finally got the solution… Issue as I explained is really very strange, but the the solution is also a bit tricky & can’t be easily catch-able!

Under  \Windows\Prefetch folder I found 3 files which starting with the same name & with extension of “.PF”. I deleted those files & booom.. Everything is back to normal.. I am able to see context menu & can change settings.. As well as I can properly close the program..

You can get some details about  \Windows\Prefetch folder at “Wikipedia”

So how do I found this issue ?!?!
Well every-time when I am running my program, Antivirus will scan all the files associated with that program. And that’s where I found its scanning a file from Prefetch folder..

I am not sure whether it’s right solution or not, but I managed to get rid of the issue…