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XSENDER error when opening an email

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  • 1 has this problem
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  • Last reply by Matt

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One on my accounts started giving me errors when I try to open emails. "Invalid UID Fetch attribute XSENDER" I only get this with this account. This account does this on my 2 machines with Thunderbird. Installed Thunderbird on a 3rd PC (with no plug-ins) and same thing. E-mails downloads, I can send, but I get this message when I try to open emails.

Installed eM Client to test the account, everything is fine in eM Client. I can also work from the ISP webmail interface with no problem.

It's only this account in Thunderbird. !?

One on my accounts started giving me errors when I try to open emails. "Invalid UID Fetch attribute XSENDER" I only get this with this account. This account does this on my 2 machines with Thunderbird. Installed Thunderbird on a 3rd PC (with no plug-ins) and same thing. E-mails downloads, I can send, but I get this message when I try to open emails. Installed eM Client to test the account, everything is fine in eM Client. I can also work from the ISP webmail interface with no problem. It's only this account in Thunderbird. !?

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all I can find on this is a bug report https://bugzilla.mozilla.org/show_bug.cgi?id=1262054

Using videotron?