cannot open opera

palindon said:

my lenovo idea centre is running win 10 , in the last 2 weeks microsoft has been doing updates in this PC, these have not been entirely completed , one item has failed twice to download

Feature update to windows 10, version 1803(4)

i have used the opera browser for many years , now i cannot open it , i have uninstalled it and re-installed it , it is in the task bar but will not open .
in addition to-day i find i cannot open M/S Edge either , i can open firefox ok and i installed vivaldi and they are both working ok .
it has been suggested in another source i turn of bitdefender which i have done , i do not run any other anti virus , but i do run , the 10 bit malware fighter and the advanced system care programs i have done for at least the last 2 years .
any help greatly appreciated , palindon

Hi palindon and welcome to Tenforums.
I don't know what this 10-bit malware fighter is, and the advanced system care sounds like a problem. Perhaps you could get rid of them and do an in-place repair to the operating system. Then completely uninstall Opera and reinstall it. Watch the video here:
Repair Install Windows 10 with an In-place Upgrade | Windows 10 Tutorials
.