![When receiving email, Thunderbird freezes and displays "Not Responding" in screen header. Adds popstate folder to account. | Thunderbird Support Forum | Mozilla Support When receiving email, Thunderbird freezes and displays "Not Responding" in screen header. Adds popstate folder to account. | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2015-04-29-06-37-36-c9557a.png)
When receiving email, Thunderbird freezes and displays "Not Responding" in screen header. Adds popstate folder to account. | Thunderbird Support Forum | Mozilla Support
![Mozzilla Thunderbird creating popstate-1.dat folders when KTS active - Kaspersky Total Security - Kaspersky Support Forum Mozzilla Thunderbird creating popstate-1.dat folders when KTS active - Kaspersky Total Security - Kaspersky Support Forum](https://forum.kaspersky.com/uploads/archive/images/330fe5c4-1796-49c8-8a85-2be6260acdd9.jpg)
Mozzilla Thunderbird creating popstate-1.dat folders when KTS active - Kaspersky Total Security - Kaspersky Support Forum
![Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2018-03-17-18-19-01-ffb198.png)
Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support
GitHub - Magentron/rebuild_thunderbird_popstate: Rebuild Thunderbird's popstate file to prevent it from downloading all messages kept on the server again
![Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2018-03-17-11-21-00-0060b8.png)
Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support
![Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2018-03-14-14-01-02-1417eb.png)
Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support
![Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2018-03-16-12-41-20-9db90e.png)
Changed IMAP to POP. Now I have errors, such as "msgFilterRules...Conflict. dat. | Thunderbird Support Forum | Mozilla Support
![Thunderbird 52.9.1 update, POP stopped working, does not ask for server password, says connecting .... | Thunderbird Forum di supporto | Supporto Mozilla Thunderbird 52.9.1 update, POP stopped working, does not ask for server password, says connecting .... | Thunderbird Forum di supporto | Supporto Mozilla](https://user-media-prod-cdn.itsre-sumo.mozilla.net/uploads/images/2018-09-29-16-43-04-3585a6.png)