Unified Folders broke, and now I can't reactivate it
I have two email accounts: my personal Gmail and my work's Google Workspace account.
Until last week, I was using Unified Folders to view both inboxes on the same screen. However, one day, Thunderbird started showing an empty panel instead of my emails. The emails only reappeared after I used Troubleshoot Mode to reset the configuration, but that action disabled Unified Folders.
Since then, I’ve been unable to reactivate Unified Folders. When I select the option, it doesn't "stick."
I've reviewed the posts Unified folders was working fine, now it's not working. and Problem displaying unified folders and the page as well as the page Unified Folders not working, but none of the suggested solutions worked for me.
I am using Thunderbird 128.5.0esr (64-bit) on Windows 11, but also tried versions 133 and 115, and they all behaved the same way, even when creating brand-new accounts.
All Replies (2)
Opening the Developer Tools and activating the Unified Folders, the following error messages apear: I guess some of them occur because I deleted the file virtualFolders.dat and the "smart mailboxes" folder.
1732905879035 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons NS_ERROR_FILE_NOT_FOUND: Component returned failure code: 0x80520012 (NS_ERROR_FILE_NOT_FOUND) [nsIMsgAccountManager.loadVirtualFolders]
loadPostAccountWizard chrome://messenger/content/messenger.js:486 _loadComponentsAtStartup chrome://messenger/content/messenger.js:303
messenger.js:488:13 1732905880115 addons.xpi WARN Addon with ID [email protected] already installed, older version will be disabled 1732905880115 addons.xpi WARN Addon with ID [email protected] already installed, older version will be disabled Error intiating smart mode. NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 _initMode chrome://messenger/content/about3Pane.js:2110 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
about3Pane.js:2112:17 Uncaught NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 regenerateMode chrome://messenger/content/about3Pane.js:1074 _initMode chrome://messenger/content/about3Pane.js:2117 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
SmartMailboxUtils.sys.mjs:183 Error intiating smart mode. NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 _initMode chrome://messenger/content/about3Pane.js:2110 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
about3Pane.js:2112:17 Uncaught NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 regenerateMode chrome://messenger/content/about3Pane.js:1074 _initMode chrome://messenger/content/about3Pane.js:2117 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
SmartMailboxUtils.sys.mjs:183 Error intiating smart mode. NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 _initMode chrome://messenger/content/about3Pane.js:2110 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
about3Pane.js:2112:17 Uncaught NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 regenerateMode chrome://messenger/content/about3Pane.js:1074 _initMode chrome://messenger/content/about3Pane.js:2117 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
SmartMailboxUtils.sys.mjs:183 tb.account.size_on_disk - Attempted to set the scalar to an incompatible value. 2 NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess' ContentProcessWatcherRegistry.sys.mjs:394 NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess' ContentProcessWatcherRegistry.sys.mjs:394 NotFoundError: No such JSProcessActor 'BrowserToolboxDevToolsProcess' 13 uncaught exception: Object Error intiating smart mode. NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 _initMode chrome://messenger/content/about3Pane.js:2110 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
about3Pane.js:2112:17 Uncaught NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 regenerateMode chrome://messenger/content/about3Pane.js:1074 _initMode chrome://messenger/content/about3Pane.js:2117 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
SmartMailboxUtils.sys.mjs:183 Source map error: Error: URL constructor: is not a valid URL. Resource URL: about:3pane Source Map URL:
Modified by Akira
I restarted Thunderbird, opened the "Developer Tools" and tried to enable the Unified Folders. This is the error message that appeared.
1732907640819 addons.xpi WARN Checking C:\Program Files\Mozilla Thunderbird\distribution\extensions for addons 1732907642000 addons.xpi WARN Addon with ID [email protected] already installed, older version will be disabled 1732907642000 addons.xpi WARN Addon with ID [email protected] already installed, older version will be disabled Error intiating smart mode. NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 _initMode chrome://messenger/content/about3Pane.js:2110 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
about3Pane.js:2112:17 Uncaught NS_ERROR_FILE_ACCESS_DENIED: Component returned failure code: 0x80520015 (NS_ERROR_FILE_ACCESS_DENIED) [nsIMsgAccountManager.saveVirtualFolders]
verify resource:///modules/SmartMailboxUtils.sys.mjs:183 SmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:32 getSmartMailbox resource:///modules/SmartMailboxUtils.sys.mjs:265 init chrome://messenger/content/about3Pane.js:1038 regenerateMode chrome://messenger/content/about3Pane.js:1074 _initMode chrome://messenger/content/about3Pane.js:2117 _toggleMode chrome://messenger/content/about3Pane.js:2092 set activeModes chrome://messenger/content/about3Pane.js:1995 toggleFolderMode chrome://messenger/content/about3Pane.js:1856 oncommand about:3pane:1
SmartMailboxUtils.sys.mjs:183 Source map error: Error: URL constructor: is not a valid URL. Resource URL: about:3pane Source Map URL:
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