When firefox is started it will not download messages. Only after multiple starts will it finally succeed
When running firefox it will sometimes download all messages promptly and on numerous occasions it will not download messages. I restart firefox several times and sometimes it will work. but it is getting worse now. Firefox works on my other devices.
Use of Mutation Events is deprecated. Use MutationObserver instead. calendar-widgets.xml:506:18 An error occurred executing the cmd_getNewMessages command: [Exception... "Component returned failure code: 0x8055000a [nsIMsgIncomingServer.getNewMessages]" nsresult: "0x8055000a (<unknown>)" location: "JS frame :: chrome://messenger/content/mailWindowOverlay.js :: GetNewMsgs :: line 2753" data: no] globalOverlay.js:103 TypeError: this._mostRecentActivityForFolder.get(...) is undefined[Learn More] pop3Download.js:93:37 An error occurred executing the cmd_getNewMessages command: [Exception... "Component returned failure code: 0x8055000a [nsIMsgIncomingServer.getNewMessages]" nsresult: "0x8055000a (<unknown>)" location: "JS frame :: chrome://messenger/content/mailWindowOverlay.js :: GetNewMsgs :: line 2753" data: no] globalOverlay.js:103 An error occurred executing the cmd_getNewMessages command: [Exception... "Component returned failure code: 0x8055000a [nsIMsgIncomingServer.getNewMessages]" nsresult: "0x8055000a (<unknown>)" location: "JS frame :: chrome://messenger/content/mailWindowOverlay.js :: GetNewMsgs :: line 2753" data: no] globalOverlay.js:103 DEPRECATION WARNING: The arguments you're passing to viewSource.xul are using an out-of-date API. You may find more details about this deprecation at: https://developer.mozilla.org/en-US/Add-ons/Code_snippets/View_Source_for_XUL_Applications chrome://global/content/viewSource.js 329 _loadViewSourceDeprecated chrome://global/content/viewSource.js 309 onXULLoaded chrome://global/content/viewSource.js 175 handleEvent
Deprecated.jsm:79
Alla svar (1)
uninstall Firefox. Then Delete the Mozilla Firefox Folders in C:\Program Files and C:\Program Files(x86) Then restart system. Then run Windows Disk Cleanup. (Note: This should be Pinned and run Weekly, If never done below expect 10's of gig's) Then run it again and click the button that says Cleanup System Files. Note: your Firefox Profile is saved. But you should make a back up before you do : https://support.mozilla.org/en-US/kb/back-and-restore-information-firefox-profiles
https://support.mozilla.org/en-US/kb/export-firefox-bookmarks-to-backup-or-transfer
Reinstall with Current Release Firefox 57.0.2 with a Full Version Installer https://www.mozilla.org/firefox/all/
Please let us know if this solved your issue or if need further assistance.