Cannot open any email folder without selecting "open in new window"
Thunderbird was updated with 52.1.1 10 days ago in Window's 7. My Chrome browser Version 58.0.3029.110 (64-bit) was updated May 15, 2017. In the last week however I had a message "Couldn't Load XPCOM" that prevented me from opening Thunderbird...searched online for XPCOM solution, reloaded Thunderbird and the message went away. Now however, Thunderbird (format of the mail page has changed also) opens but none of my many folders will open when selecting it. They will only "open in a new window." New mail loads but the inbox has to be "viewed in a new window." Mail can be sent. In trouble as this is timely and all of the mail folders contain my various interests in detail. Read about similar older responses re reloading Thunderbird, etc but nothing specific to this situation.
الحل المُختار
Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on "Restart with Add-ons Disabled". If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.
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read this https://support.mozilla.org/en-US/questions/1029239 hope this will help you
Thanks for replying....the second part of the above message states the current problem...the first part was mentioned in the event it could somehow be relevant to the current problem.....your help is appreciated....
الحل المُختار
Restart Thunderbird with add-ons disabled (Thunderbird Safe Mode). On the Help menu, click on "Restart with Add-ons Disabled". If Thunderbird works like normal, there is an Add-on or Theme interfering with normal operations. You will need to re-enable add-ons one at a time until you locate the offender.