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Replacing corrupted profile with pre-ver 78.4Tbird profile OS Win 10

Seamus O'Cleireacain
Seamus O'Cleireacain
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I updated T bird to ver 78.4 from whatever was the recent previous version but now have a corrupted profile (doesn't show all Inbox folders). I backed up the profile before the update. It has the same name as the corrupt profile. With Tbird closed, can I just use Explorer to replace the profile with its earlier version? OS is Win 10

I updated T bird to ver 78.4 from whatever was the recent previous version but now have a corrupted profile (doesn't show all Inbox folders). I backed up the profile before the update. It has the same name as the corrupt profile. With Tbird closed, can I just use Explorer to replace the profile with its earlier version? OS is Win 10
Captures d’écran jointes

Solution choisie

In your screenshots, the non-showing folders are hidden (have the hidden attribute). Was this intentional? Make them not hidden (remove the hidden attribute) and restart Tbird.

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Stans
Stans
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Solution choisie

In your screenshots, the non-showing folders are hidden (have the hidden attribute). Was this intentional? Make them not hidden (remove the hidden attribute) and restart Tbird.

Seamus O'Cleireacain
Seamus O'Cleireacain Auteur de la question
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Many Many Thanks!!!!!

Wayne Mery
Wayne Mery
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Any idea how they got hidden?

Seamus O'Cleireacain
Seamus O'Cleireacain Auteur de la question
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It would not have been done intentionally since I don't delve deep inside folders I don't understand. It happened during a Tbird upgrade last week on a day when the computer kept dropping the wifi connection on the dual-frequency home LAN. The laptop is frequently moved from room to room without incident but Windows troubleshooter diagnosed the repeated dropped connections as due to "excessive roaming"