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Thunderbird Not Responding Windows 10

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  • 4 have this problem
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  • Last reply by john.rovcom

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Thunderbird 78.10.1 (64-bit) often stops working and I get the message in Thunderbird "not responding". Let it sit for a 15 or 20 seconds and it corrects itself and works for a while. In the meantime, I keep getting notifications from Microsoft's Application Compatibility Assistant that a program will cause System problems on Windows 10. Since I only get lots of "not responding" from Thunderbird, I assume Thunderbird is causing the notification. I'm using Windows Pro Version 20h2 (OS Build 19042.928) Suggestions??

Thunderbird 78.10.1 (64-bit) often stops working and I get the message in Thunderbird "not responding". Let it sit for a 15 or 20 seconds and it corrects itself and works for a while. In the meantime, I keep getting notifications from Microsoft's Application Compatibility Assistant that a program will cause System problems on Windows 10. Since I only get lots of "not responding" from Thunderbird, I assume Thunderbird is causing the notification. I'm using Windows Pro Version 20h2 (OS Build 19042.928) Suggestions??

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I also get the "Not Responding" message quite often when using Thunderbird. It goes dead for 20 seconds or so quite regularly. It happens on two computers, both using Thunderbird 78.12.0 (64-bit) on Windows 10 Pro 21H1. These are fast machines. One is an XPS 15 9570 6-core i7-8750H with 32GB of RAM and 2TB SSD. The other is a Ryzen 9 3950X 16-Core desktop with 64GB of RAM and 4TB SSD.

When I edit my advertising email message filter it can take minutes to open up and minutes to switch windows again. I get a lot of ads in my inbox so the filter list keeps growing. I can no longer maintain the list using the GUI.

I've been using Thunderbird for over a decade, but I'm looking for something else to use now that it's become so slow to be unusable.

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Chosen Solution

I also get the "Not Responding" message quite often when using Thunderbird. It goes dead for 20 seconds or so quite regularly. It happens on two computers, both using Thunderbird 78.12.0 (64-bit) on Windows 10 Pro 21H1. These are fast machines. One is an XPS 15 9570 6-core i7-8750H with 32GB of RAM and 2TB SSD. The other is a Ryzen 9 3950X 16-Core desktop with 64GB of RAM and 4TB SSD.

When I edit my advertising email message filter it can take minutes to open up and minutes to switch windows again. I get a lot of ads in my inbox so the filter list keeps growing. I can no longer maintain the list using the GUI.

I've been using Thunderbird for over a decade, but I'm looking for something else to use now that it's become so slow to be unusable.

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Thunderbird 78.10.1 (64-bit) often stops working and I get the message in Thunderbird "not responding".

What is your anti-virus software?

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I have checked that TB is on the exception list and is therefore not scanning incoming emails but it is still slow and still consistantly shows "Not Responding".

What can be done about this, it is extremely annoying and time consuming.

John Owles