I may have inadvertantly blocked Firefox from executing. I run Windows 11 on my desktop, and use SpyBot as my virus defender. Last night SpyBot may have run and prevented Firefox from running. This morning it would not open at all, no matter using a shortcut button or activating the program directly from Menu. I tried re-installing, but a window opens saying, "Hmm. For some reason we could not install Firefox." I tried uninstalling Mozilla but the window opens to initiate the process but in 20 minutes less than 1% of the procedure bar is lit and blinking. Do you have any suggestions?