TimeZone is invalid

Every time my email starts I get “TimeZone is invalid” error. I “Edit Item” and it brings up a calendar event, but the ti me zone is correct. This is very annoying. 

Can you post the iCalendar source of the item? You can do it by right clicking on event in any view, selecting Show as iCalendar and post the source code here.

BEGIN:VCALENDAR
VERSION:2.0
PRODID:-//MailClient.VObject/7.1.32088.0
BEGIN:VTIMEZONE
TZID:Eastern Time
BEGIN:STANDARD
DTSTART:20161101T020000
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
TZNAME:Standard Time
END:STANDARD
BEGIN:DAYLIGHT
DTSTART:20160301T020000
RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
TZNAME:Daylight Savings Time
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VTIMEZONE
TZID:Eastern Standard Time
X-EM-DISPLAYNAME:(UTC-05:00) Eastern Time (US & Canada)
BEGIN:STANDARD
TZNAME:STANDARD
DTSTART:00010101T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RRULE:FREQ=YEARLY;UNTIL=20061231T000000Z;BYDAY=-1SU;BYMONTH=10
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:DAYLIGHT
DTSTART:00010101T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RRULE:FREQ=YEARLY;UNTIL=20061231T000000Z;BYDAY=1SU;BYMONTH=4
END:DAYLIGHT
BEGIN:STANDARD
TZNAME:STANDARD
DTSTART:20070101T020000
TZOFFSETFROM:-0400
TZOFFSETTO:-0500
RRULE:FREQ=YEARLY;BYDAY=1SU;BYMONTH=11
END:STANDARD
BEGIN:DAYLIGHT
TZNAME:DAYLIGHT
DTSTART:20070101T020000
TZOFFSETFROM:-0500
TZOFFSETTO:-0400
RRULE:FREQ=YEARLY;BYDAY=2SU;BYMONTH=3
END:DAYLIGHT
END:VTIMEZONE
BEGIN:VEVENT
UID:60b8495b-583d-4c8a-8b49-17c2faf1db4b
SEQUENCE:1524254348
DTSTART;TZID=Eastern Standard Time:20180227T103000
DTEND;TZID=Eastern Standard Time:20180227T113000
TRANSP:OPAQUE
X-MICROSOFT-CDO-BUSYSTATUS:BUSY
LAST-MODIFIED:20180504T121931Z
DTSTAMP:20180424T143000Z
CREATED:20180227T152520Z
SUMMARY:Weekly It Chat
DESCRIPTION:\n\n\nJoin WebEx meeting \n<https://packagingspecialties.my.web
 ex.com/packagingspecialties.my/j.php?MTID=m37e33de62de797dfec2c863da3f7a8d
 b>\nMeeting number (access code): 629 032 702\nMeeting password: pyMxPnKv\
 n\n\n\n\nJoin from a video system or application\nDial629032702@packagings
 pecialties.my.webex.com \n<sip: href="mailto:629032702@packagingspecialties.my.webex.com" rel=“nofollow”>629032702@packagingspecialties.my.web…
>\nYou can also dial 173.243.2.68 and enter your meeting number.\n\n\nJoin
by phone\n+1-510-338-9438 USA Toll\nGlobal call-in numbers \n<https://pac
kagingspecialties.my.webex.com/packagingspecialties.my/globalcallin.php?se
rviceType=MC&ED=644389317&tollFree=0>\n\n\n\nCan’t join the meeting? s://help.webex.com/docs/DOC-5412>\n\nIMPORTANT NOTICE: Please note that th
is WebEx service allows audio and \nother information sent during the sess
ion to be recorded, which may be \ndiscoverable in a legal matter. By joi
ning this session, you \nautomatically consent to such recordings. If you
do not consent to being \nrecorded, discuss your concerns with the host
or do not join the \nsession.
LOCATION:https://packagingspecialties.my.webex.com/packagingspecialties.my
ATTENDEE;CN=Jim Gambon;RSVP=TRUE:mailto:jgambon@psi-ga.com
ATTENDEE;CN=Gary D. Davis;PARTSTAT=ACCEPTED;RSVP=TRUE:mailto:gdavis@psi-ga.
com
ORGANIZER;CN=Jim Gambon:mailto:jgambon@psi-ga.com
CLASS:PUBLIC
RRULE:FREQ=WEEKLY;BYDAY=TU;WKST=SU
BEGIN:VALARM
ACTION:DISPLAY
DESCRIPTION:Alarm
X-MOZ-LASTACK:20180508T141400Z
ACKNOWLEDGED:20180508T141400Z
TRIGGER;RELATED=START:-PT15M
X-WR-ALARMUID:4adc974e-0f3a-452a-9ae7-7ec6e518edef
END:VALARM
END:VEVENT
BEGIN:VEVENT
CLASS:PUBLIC
DESCRIPTION:JOIN WEBEX MEETING\nhttps://packagingspecialties.my.webex.com/p
ackagingspecialties.my/j.php?MTID=mffc18f8547fcb5baed5c83b59a5d73ed\nMeeti
ng number (access code): 625 981 223\nMeeting password: pyMxPnKv\n\n\n\nJO
IN FROM A VIDEO SYSTEM OR APPLICATION\nDial sip:625981223@packagingspecial
ties.my.webex.com\nYou can also dial 173.243.2.68 and enter your meeting n
umber.\n\n\nJOIN BY PHONE\n+1-510-338-9438 USA Toll\n\nGlobal call-in numb
ers:\nhttps://packagingspecialties.my.webex.com/packagingspecialties.my/gl
obalcallin.php?serviceType=MC&ED=670356312&tollFree=0\n\n\n\nCan’t join th
e meeting?\nhttps://help.webex.com/docs/DOC-5412\n\n\nIMPORTANT NOTICE: Pl
ease note that this WebEx service allows audio and other information sent
during the session to be recorded, which may be discoverable in a legal m
atter. By joining this session, you automatically consent to such recordi
ngs. If you do not consent to being recorded, discuss your concerns with
the host or do not join the session.\n
X-ALT-DESC;FMTTYPE=text/html: &nbsp;
&nbsp<br> ;
&nbsp;
https://packagingsp
ecialties.my.webex.com/packagingspecialties.my/j.php?MTID=mffc18f8547fcb5b
aed5c83b59a5d73ed">Join WebEx
meeting

Meeting number (access code): 625 981 223

Meeting password: pyMxPnKv

ze="2" COLOR="#FF0000">
&nbsp\;
&
nbsp\;
Join from a video system or application
E="2" COLOR="#666666" FACE="arial">Dial >625981223@packagingspecialties.my.web...&nbsp\;
IZE="2" COLOR="#666666" FACE="arial">You can also dial 173.243.2.68 and en
ter your meeting number. &nbsp\;
&nbsp\;
&nbsp\;
>J
oin by phone&nbsp\;
+1-510-338-9438&nbsp\;USA Toll&nbsp\;
ref="https://packagingspecialties.my.webex.com/packagingspecialties.my/glo
balcallin.php?serviceType=MC&ED=670356312&tollFree=0"> ="#00AFF9" FACE="arial">Global call-in numbers&nbsp\;
T>

&nbsp\;
" rel="nofollow" target="_blank">https://help.webex.com/docs/DOC-5412">; NT SIZE="1" COLOR="#00AFF9" FACE="Arial">Can't join the meeting? > &nbsp\;
&nbsp\;
IMPORT
ANT NOTICE: Please note that this WebEx service allows audio and other inf
ormation sent during the session to be recorded, which may be discoverable
in a legal matter. By joining this session, you automatically consent to
such recordings. If you do not consent to being recorded, discuss your con
cerns with the host or do not join the session.
DTSTAMP:20180503T191804Z
UID:60b8495b-583d-4c8a-8b49-17c2faf1db4b
PRIORITY:5
DTSTART;TZID=Eastern Time:20180430T103000
DTEND;TZID=Eastern Standard Time:20180430T113000
SEQUENCE:1524845189
SUMMARY:Weekly It Chat
TRANSP:OPAQUE
ORGANIZER;CN=Jim Gambon:mailto:jgambon@psi-ga.com
LOCATION:https://packagingspecialties.my.webex.com/packagingspecialties.my
X-MICROSOFT-CDO-BUSYSTATUS:BUSY
LAST-MODIFIED:20180504T121931Z
ATTENDEE;CN=Jim Gambon;RSVP=TRUE:mailto:jgambon@psi-ga.com
END:VEVENT
END:VCALENDAR

Any thoughts on this?