Hi there, A colleague has updated to Windows 10 and her Thunderbird gives error message that disk is full or issue with file permissions. All other files from other emails (gmail, aol, etc) download fine, but Thunderbird gives her the error. Any ideas on how to fix this? Could it be local directory where her Imapmail is downloaded to? It says: /Users/MTP/Library/Thunderbird/Profiles/qms2gr02.default/ImapMail/s98318.gridserver.com Thanks for troubleshooting this! Mark