UPDATED!! ¿Por qué no podemos abrir más de dos calendarios compartidos con Outlook 2003 y Exchange 2010? ¿Cómo lo resuelvo? "The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action."

UPDATED!!!

Buen día amig@s,
después de mover una casilla desde Exchange 2003 a Exchange 2010, manteniendo nuestro Outlook 2003 como cliente, y haber trabajado con varios calendarios compartidos, al querer abrír el segundo calendadio compartido obtenemos el siguiente error:

"The connection to the Microsoft Exchange Server is unavailable. Outlook must be online or connected to complete this action."

Oulook and OWA Version...Great Comparision Chart from @HenrikWalther

I want to share this useful chart for multiple users ...from system admin to design tasks..this is a very long post, but take a look

Outlook and OWA Version Comparison Chart

Feature:

OWA 2010 SP1

OWA 2010

OWA 2007 SP1

OWA  2007

Outlook 2010

Outlook 2007

Outlook 2003

Email

Conversation view

Yes (improved)

Yes (improved)

Yes

Yes

Yes (improved)

Yes

Yes

Show messages from other folders (conversation view)

Yes

Yes

No

No

Yes

No

No

Ignore

Yes

Yes

No

No

Yes

No

No

Conversation cleanup

No

No

No

No

Yes

No

No

Always move

No

No

No

No

Yes

No

No

Always categorize

Yes

No

No

No

Yes

No

No

MailTips

Yes

Yes

No

No

Yes

No

No

Calendar preview

No

No

No

No

Yes

No

No

Search email

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Access to other email accounts (POP3/IMAP4)

Exchange Online Only

Exchange Online Only

No

No

Yes

Yes

Yes

Offline access

No

No

No

No

Yes

Yes

Yes

Cached mode

No

No

No

No

Yes

Yes

Yes

Multiple Exchange account access

No

No

No

No

Yes

No

No

Anti-phishing and anti-spam technology

Server only

Server only

Server only

Server only

Local & Server

Local & Server

Local & Server

Online archive

Yes

Yes

No

No

Yes

Plug-in

No

Archive folders (.pst files)

No

No

No

No

Yes

Yes

Yes

Attachment preview

Yes

Yes

No

No

Yes

Yes

No

Color categories

Yes

Yes

Yes

Yes

Yes

Yes

No

Delay message delivery

No

No

No

No

Yes

Yes

Yes

Direct replies to

No

No

No

No

Yes

Yes

Yes

Internal/external out of office assistant

Yes

Yes

Yes

Yes

Yes

Yes

No

Managed folders

Yes

Yes

Yes

Yes

Yes

Yes

No

Retention policies (per folder)

Yes

No

No

No

Yes

No

No

Retention policies (per mail)

Yes

No

No

No

Yes

No

No

Archive policies

Yes

Yes

No

No

Yes

No

No

Out of office scheduling

Yes

Yes

Yes

Yes

Yes

Yes

No

Recover deleted items

Yes

Yes

Yes

No

Yes

Yes

Yes

S/MIME

Plug-in

Plug-in

Plug-in

No

Yes

Yes

Yes

Send and receive fax

No

No

Receive only

Receive only

Yes

Yes

Yes

Set/use multiple signatures

No

No

No

No

Yes

Yes

Yes

Unified messaging integration (voicemail)

Inline  viewer

Inline viewer

Inline viewer

Inline viewer

Inline viewer

Inline viewer

Attachment

Voicemail preview

Inline  viewer

Inline viewer

Inline  viewer

Inline viewer

Inline  viewer

Inline  viewer

Inline  viewer

Voicemail "skip to word"

No

No

No

No

Yes

No

No

Voting buttons

No

No

No

No

Yes

Yes

Yes

Have replies sent to

No

No

No

No

Yes

Yes

Yes

Moderated message approval

No

No

No

No

Yes

Yes

Yes

Delivery receipt request

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Read receipt request

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Quick steps

No

No

No

No

Yes

No

No

Reply with meeting

No

No

No

No

Yes

No

No

Contact photos

No

No

No

No

Yes

Yes

No

Delegate access

Yes

Yes

No

No

Yes

Yes

Yes

Inline images when creating an email

Yes

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA  2010

OWA 2007 SP1

OWA  2007

Outlook 2010

Outlook  2007

Outlook 2003

Calendar

Calendar month view

Yes

Yes

Yes

No

Yes

Yes

Yes

Calendar week view

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Calendar work week view

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Calendar day view

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Schedule view

No

No

No

No

Yes

No

No

Calendar printing

Yes

No

No

No

Yes

Yes

Yes

Search calendar

No

No

No

No

Yes

Yes

Yes

Calendar overlay mode

No

No

No

No

Yes

Yes

No

Calendar preview months

Yes (1 month)

Yes (1 month)

Yes (1 month)

Yes (1 month)

Yes (6 months)

Yes (3 months)

Yes (3 months)

Calendar publishing (external)

Yes

No

No

No

Yes (OWA link)

Yes

No

Calendar sharing (internal)

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Calendar sharing (external)

Yes

Yes

No

No

Yes

No

No

Shared calendars

Yes

Yes

No

No

Yes

Yes

Yes

Cached shared calendar

No

No

No

No

Yes

Yes

No

Subscribe to calendar

Yes

No

No

No

Yes

Yes

No

Calendar snapshot

No

No

No

No

Yes

Yes

No

Calendar view has tasks by day

No

No

No

No

Yes

Yes

No

Display of multiple calendars

Yes

Yes

No

No

Yes

Yes

Yes

Forward latest meeting

Yes

Yes

Yes

Yes

Yes

Yes

No

Free/busy details sharing

Yes

Yes

No

No

Yes

Yes

No

Import/export calendar

No

No

No

No

Yes

Yes

Yes

Propose new meeting time

No

No

No

No

Yes

Yes

Yes

Scheduling assistant

Yes

Yes

Yes

Yes

Yes (improved)

Yes

No

Meeting room finder

No

No

No

No

Yes

No

No

Color categories

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Specify a color for a calendar

No

No

No

No

Yes

No

No

Secondary time zone

No

No

No

No

Yes

Yes

Yes

Adapt to current time zones definition

Yes

Yes

Server Side Tool

Server Side Tool

Yes

No

No

Set calendar visibility options

Yes

Yes

No

No

Yes (F/B, Subject & Loc., or Full)

Yes (F/B, Subject & Loc., or Full)

Yes (F/B or Full)

Mark as private

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Team calendars

No

No

No

No

Yes

No

No

Free/busy in side-by-side view

Yes

Yes

No

No

Yes

No

No

Expand calendar date picker

No

No

No

No

Yes

No

No

Feature:

OWA 2010 SP1

OWA 2010

OWA  2007 SP1

OWA 2007

Outlook  2010

Outlook  2007

Outlook 2003

Contacts

Contact card

Yes

Yes

Yes

Yes

Improved

Yes

Yes

Contact sharing

No

No

No

No

Yes

Yes

Yes

Contacts views

1

1

1

1

Yes

Yes

Yes

Search contacts

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Customized contact views

No

No

No

No

Yes

Yes

Yes

Add/edit personal distribution lists

Yes

Yes

Yes

No

Yes (improved)

Yes

Yes

Electronic business cards

No

No

No

No

Yes

Yes

No

Import/export contacts

No

No

No

No

Yes

Yes

Yes

Manage rights on contacts

No

No

No

No

Yes

Yes

Yes

Mark as private

No

No

No

No

Yes

Yes

Yes

Color categories

Yes

Yes

Yes

Yes

Yes

Yes

No

Global Address List (GAL) sync and update

No

No

No

No

Yes

No

No

Outlook Social Connector contacts import

No

No

No

No

Yes

Plug-in

Plug-in

Offline address book

No

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA 2010

OWA 2007 SP1

OWA 2007

Outlook 2010

Outlook 2007

Outlook 2003

Notes

View note

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Create note

No

No

No

No

Yes

Yes

Yes

Categorize notes

No

No

No

No

Yes

Yes

No

Create notes folder

No

No

No

No

Yes

Yes

Yes

Forward note

No

No

No

No

Yes

Yes

Yes

Move note

No

No

No

No

Yes

Yes

Yes

Search notes

No

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA 2010

OWA 2007 SP1

OWA  2007

Outlook  2010

Outlook  2007

Outlook 2003

Tasks

View task

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Create task

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Search tasks

Indexed

Indexed

Indexed

Indexed

Indexed

Indexed

Un-indexed

Categorize tasks

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Filter tasks

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Mark as complete

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Mark as private

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Create folder

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Delete folder

Yes

Yes

No

No

Yes

Yes

Yes

Move to folder

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Task request

No

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA 2010

OWA 2007 SP1

OWA 2007

Outlook  2010

Outlook 2007

Outlook 2003

Public Folders

Create new item

Yes

Yes

Yes

No

Yes

Yes

Yes

Categorize item

Yes

Yes

Yes

No

Yes

Yes

Yes

Read folders

Yes

Yes

Yes

No

Yes

Yes

Yes

Search folder

Indexed

Indexed

Indexed

No

Indexed

Indexed

Un-indexed

Create folder

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Create calendar

No

No

No

No

Yes

Yes

Yes

Edit calendar

No

No

No

No

Yes

Yes

Yes

Create contacts

No

No

No

No

Yes

Yes

Yes

Create journal

No

No

No

No

Yes

Yes

Yes

Post files/documents

No

No

No

No

Yes

Yes

Yes

Read files/documents

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Public folder permission management

No

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA 2010

OWA  2007 SP1

OWA 2007

Outlook  2010

Outlook  2007

Outlook 2003

Collaboration

Shared workspace integration

No

No

No

No

Yes

Yes

No

SharePoint document libraries

No

No

Limited

Limited

Yes

Yes

No

SharePoint integration

No

No

Some

Some

Yes

Yes

Yes

SharePoint lists

No

No

No

No

Yes

Yes

No

Outlook Social Connector

No

No

No

No

Yes

Plug-in

Plug-in

Feature:

OWA  2010 SP1

OWA  2010

OWA  2007 SP1

OWA 2007

Outlook 2010

Outlook  2007

Outlook 2003

User Interface & Productivity

RSS integration (reading)

Yes

Yes

Yes

Yes

Yes

Yes

No

Add new RSS feed

No

No

No

No

Yes

Yes

No

Update RSS feed

No

No

No

No

Yes

Yes

No

Add-ins

No

No

No

No

Yes

Yes

Yes

Attach item to items

Limited

Limited

Limited

Limited

Yes

Yes

Yes

Auto-account setup

Yes

Yes

Yes

Yes

Yes

Yes

No

Certificate management

No

No

No

No

Yes

Yes

Yes

Custom dictionary

No

No

No

No

Yes

Yes

Yes

Custom forms

No

No

Yes

No

Yes

Yes

Yes

Customize navigation pane

No

No

No

No

Yes

Yes

Yes

Customize UI/buttons

Yes

Yes

Yes

No

Yes

Yes

Yes

Delegate control

Yes

Yes

No

No

Yes

Yes

Yes

Favorite folders

Yes

Yes

No

No

Roaming

Per Outlook

Per Outlook

Flag mail as task

Yes

Yes

Yes

Yes

Yes

Yes

No

Flag on send

No

No

No

No

Yes

Yes

No

Fluent user interface

No

No

No

No

Full

In compose

No

Hierarchical address book

No

No

No

No

Yes

Yes

No

Import/export feeds

No

No

No

No

Yes

Yes

No

InfoPath integration

No

No

No

No

Yes

Yes

No

Integrated presence indicators

Yes

Yes

No

No

Yes

Yes

Yes

Journal

No

No

No

No

Yes

Yes

Yes

Macros/VBA

No

No

No

No

Yes

Yes

Yes

Outlook plug-ins

No

No

No

No

Yes

Yes

Yes

Outlook today page

No

No

No

No

Yes

Yes

Yes

Paste objects into messages/appointments

Yes

Yes

No

No

Yes

Yes

Yes

Rules wizard

Yes

Yes

Yes

No

Yes

Yes

Yes

Send to OneNote

No

No

No

No

Yes

Yes

No

Shortcuts

No

No

No

No

Yes

Yes

Yes

Zoom slider (email)

No

No

No

No

Yes

No

No

Zoom slider (calendar)

No

No

No

No

Yes

No

No

Quick Contacts

Yes

Yes

No

No

Yes

No

No

Word wheel search of GAL

No

No

No

No

Yes

No

No

Quota thermometer

Yes

Yes

Yes

Yes

Yes

No

No

SMS integration

Yes

Yes

No

No

Yes

Yes

No

To-do bar

No

No

No

No

Yes

Yes

No

Granular downloading (low bandwidth sync)

No

No

No

No

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA  2010

OWA  2007 SP1

OWA  2007

Outlook 2010

Outlook 2007

Outlook 2003

Search

Highlighted search terms

No

No

No

No

Yes

Yes

No

Right-click related search

No

No

No

No

Yes

Yes

Yes

Search as you type

No

No

No

No

Yes

Yes

No

Search filters

Yes

Yes

Limited

Limited

Yes

Yes

No

Search context tab

No

No

No

No

Yes

No

No

Search folders

View only

View only

View only

View only

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA  2010

OWA 2007 SP1

OWA 2007

Outlook  2010

Outlook  2007

Outlook 2003

Security

Delivery reports

Yes

Yes

No

No

Yes (OWA)

No

No

Encrypted connection

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Add to safe/blocked senders list

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Information Rights Management (IRM)

Yes

Yes

Plug-in

Plug-in

Yes

Yes

Yes

Outlook Protection Rules

No

No

No

Yes

No

No

No

Protected Voicemail

Yes

Yes

No

No

Yes

No

No

WebReady IRM Protected Document Viewing

Yes

No

No

No

No

No

No

Block external content

Yes

Yes

Yes

Yes

Yes

Yes

Yes

Feature:

OWA 2010 SP1

OWA 2010

OWA 2007 SP1

OWA 2007

Outlook  2010

Outlook 2007

Outlook 2003

OCS/Lync Integration

Reply with instant messaging

Yes

Yes

No

No

Yes

Yes

Yes

Integrated instant messaging

Yes

Yes

No

No

Yes

Yes

Yes

Integrated presence

Yes

Yes

No

No

Yes

Yes

Yes

see http://social.technet.microsoft.com/wiki/contents/articles/outlook-and-owa-version-and-features.aspx

Enjoy

-Dario