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Thunderbird exchange email accounts disappeared and I cannot get them back

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All of a sudden, all my exchange accounts disappeared from both my laptop and desktop (both Mac running the latest OS). I have tried reconnecting to them but have not been able. The accounts are ok and I can access them via outlook or web browser. But I want Thunderbird back. I use the OWL plugin. The loss of accounts seems to have coincided with the latest Thunderbird release on 10 October. I'm assuming this is some kind of bug and that I'm not the only victim. Has anyone else suffered this? If so, is there a fix? Thanks Wayne

All of a sudden, all my exchange accounts disappeared from both my laptop and desktop (both Mac running the latest OS). I have tried reconnecting to them but have not been able. The accounts are ok and I can access them via outlook or web browser. But I want Thunderbird back. I use the OWL plugin. The loss of accounts seems to have coincided with the latest Thunderbird release on 10 October. I'm assuming this is some kind of bug and that I'm not the only victim. Has anyone else suffered this? If so, is there a fix? Thanks Wayne

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Brilliant!!, Thanks :)