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Thunderbird freezes after startup. I tried restarting, Troubleshoot Mode, and both “default” and “default-esr” profiles, but the issue remains. Please advise how to fix this without losing my emails. This is affecting my work and needs urgent resolution.
Additional details:
- Operating system: Windows (please specify your Windows version if known)
- The issue started on August 25, 2026.
- Thunderbird becomes unresponsive shortly after startup.
- A “System Integration” prompt appears before Thunderbird becomes unresponsive.
- I cannot click any buttons once Thunderbird becomes unresponsive.
- I tested both available profiles (“default” and “default-esr”) using the Profile Manager, but the same issue occurred with both profiles.
- I also started Thunderbird in Troubleshoot Mode with all add-ons disabled, but the issue still occurred.
- I can force-close Thunderbird through Windows when it becomes unresponsive.
- I have not deleted or modified any Thunderbird profile files because I want to avoid losing existing email data.
- The profile containing my email data appears to be “default-esr”.
I would appreciate any guidance on how to identify the cause of this issue and restore Thunderbird without losing my existing emails.
Additional details:
* Operating system: Windows (please specify your Windows version if known)
* The issue started on August 25, 2026.
* Thunderbird becomes unresponsive shortly after startup.
* A “System Integration” prompt appears before Thunderbird becomes unresponsive.
* I cannot click any buttons once Thunderbird becomes unresponsive.
* I tested both available profiles (“default” and “default-esr”) using the Profile Manager, but the same issue occurred with both profiles.
* I also started Thunderbird in Troubleshoot Mode with all add-ons disabled, but the issue still occurred.
* I can force-close Thunderbird through Windows when it becomes unresponsive.
* I have not deleted or modified any Thunderbird profile files because I want to avoid losing existing email data.
* The profile containing my email data appears to be “default-esr”.
I would appreciate any guidance on how to identify the cause of this issue and restore Thunderbird without losing my existing emails.
Krejt Përgjigjet (1)
- Start Windows in safe mode with networking enabled - https://support.microsoft.com/en-us/help/12376/windows-10-start-your-pc-in-safe-mode
- Still In Windows safe mode, start Thunderbird in Troubleshoot Mode - https://support.mozilla.org/en-US/kb/troubleshoot-mode-thunderbird
Does problem change? (many users have found antivirus software causing problems)
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