181705 - mozilla will not open more than one window; thus, will not open compose, help. etc.

Status: RESOLVED DUPLICATE of bug 271476

(MailNews Core :: Composition, defect)

Description

[Dan Meek]

User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
Build Identifier: i cannot fill this in, because Mozilla will not show this; this is part of the problem

Suddenly, Mozilla 1.1, 1.2b (I tried both) refuse to open more than one 
window.  Thus, I cannot open a compose window.  I cannot open help, etc.  Also, 
Mozilla refuses to remove itself when I exit it, and I must remove it by ending 
process using the Windows 2000 task bar.

Reproducible: Always

Steps to Reproduce:
1.open mozilla
2.try to compose or help or do anything that opens a window
3.

Actual Results:  
Mozilla does not open a window

Expected Results:  
should open a window

Comment 1

[Jean-Francois Ducarroz]

-->varada

Comment 2

[Kai Trojahner]

I encountered the same bug on my Windows XP machine. Strangely it even refuses 
to open a window if the quicklaunch application is running. Even multiple 
uninstall/install procedures did not solve the problem.

Comment 3

[Kai Trojahner]

I just seem to have "fixed" my installation by deleting the following files from
my user profile directory:
Cache/*
chrome/*
localstore.rdf
prefs.bak
cookies.txt
downloads.rdf
history
history.mab
search.rdf

I hope this helps,
/Kai

Comment 4

[u79855]

Kai, deleting most of those files didn't help my version of this bug.

I'm able to start up a main window (Mail / News), able to read email in 
separate windows but unable to open a compose window.  "Compose", "Forward" and 
related keyboard shortcuts all fail.  The existing windows may be minimized but 
no other action works from then on (application stops responding).

My system is a Windows 2000 SP3 laptop running Mozilla 1.2.1 with SkyPilot 2 
theme and 2 IMAP accounts.  I primarily use Mozilla as my email client and 
haven't seen if other types of windows open properly.  Problem started after 
the last time I synchronized IMAP mail folders.

Comment 5

[Dan Meek]

I find that the problem starts when I designate Mozilla as the default browser.
 Problem abates when I designate IE as default browser.  Thus, Mozilla has a
preference for IE as the default browser!

Comment 6

[florian loitsch]

just some more comments:
problem started, when upgrading from 1.2.1 to 1.3 alpha (without uninstalling
the old version).
Kai Trojahner's solution (deleting some files) worked for me.

Comment 7

[Philip Kügler]

(In reply to comment #0)
> User-Agent:       Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.0)
> Suddenly, Mozilla 1.1, 1.2b (I tried both) refuse to open more than one 
> window.  Thus, I cannot open a compose window.  I cannot open help, etc.  Also, 
> Mozilla refuses to remove itself when I exit it, and I must remove it by ending 
> process using the Windows 2000 task bar.

The same Problem ocsures in Firefox too. Reason for this problem might be the
Extension "UserAgentSwitcher" (see:
http://chrispederick.com/work/firefox/useragentswitcher/documentation/faq/#faq6) 

Occures: Firefox (not explicitly tested but several Versions > 1.0)
         Mozilla (not explicitly tested)

Reprocuceable: Yes (Autoupgrade UserAgentSwitcher to newer Version)

Similar Problem: FireFox (BugID= 271476)
@see: https://bugzilla.mozilla.org/show_bug.cgi?id=271476

Solution:
*********
  Uninstall UserAgentSwitcher
  Restart Mozilla/FireFox
  Install newer Version of UserAgentSwitcher (if you want)

Comment 8

[William Bumgarner [:zsinj]]

*** This bug has been marked as a duplicate of 271476 ***