What problems do you have with opening windows?

Could you please describe this problem with more details?

If unrequested windows open then you may have a problem with malware.

• https://support.mozilla.org/kb/troubleshoot-firefox-issues-caused-malware

Hello cor-el,

please excuse me for my late answer to your response.

1. I have checked my PC with several antivirus and malware software like adware-cleaner and windows defender and also with the scan function of my antivirus software, but it did not have found any virus or malware at all. And I did not notice any virus-function on my PC.

2. I have deleted and deactivated all addons I have installed, to check if anything did not function with installed addons. And I have started firefox with deactivated addons too. But it did not have found any result to solve the described problem with opening several firefox windows.

3. If I am opening firefox once, the opened firefox windows are not in the usual order as before and if I am opening firefox the second time all firefox windows are opened in the usual order as before. If I am opening firefox the third time all firefox windows are opening not in usual order again and if I am opening firefox for the fourth time, all opened firefox windows has opened in usual order and so on.

This described firefox windows problem could have been noticed in firefox 41.0 too, but in the following versions firefox 41.0.1 and 41.0.2 this technical problem was solved.

kind regards pemigabo123

Hello cor-el,

as in the firefox versions before, mozilla firefox 43.0 up to actual firefox version 43.0.4, the technical problem with starting firefox and opening windows has been developed in more accidental way and not in order as before.

How could it be programmed in mozilla firefox, that all opened windows could be opened in order as they are placed before closing firefox ?

kind regards pemigabo123

Are you using Sync?

No, I am not using Sync.

kind regards pemigabo123