Presencia desconocida/Presence unknown Lync 2013/Skype for bussines

PROBLEM:
contacts at Lync/Skype clients shows "presence unknown"


SOLUTION:

delete %UserProfile%\AppData\Local\Microsoft\Office\15.0\Lync in the computer client.

(Create a GPO to apply all Organization computers)

references: http://blog.insidelync.com/2013/09/lync-2013-presence-issues/

Outlook Web App didn’t initialize. If the problem continues, please contact your helpdesk.

PROBLEM:
Exception type:Microsoft.Exchange.Clients.Owa.Core.OwaThemeManagerInitializationException
Exception message: Couldn’t find a base theme (folder name=base)
Call stack
Microsoft.Exchange.Clients.Owa.Core.ThemeManager.LoadThemeFiles()
Microsoft.Exchange.Clients.Owa.Core.OwaApplicationBase.ExecuteApplicationStart(Objectsender, EventArgs e)

SOLUTION
run UPDATECAS.PS1 from ‘C:\Program Files\Microsoft\Exchange Server\V14\Bin 
with Exchange Management Shell

Recuperar archivos no guardados de Word/Recover unsaved Word files

Si realizaste archivos de Word y no los guardaste puedes encontrarlos en esta ruta (Aplica para cualquier documento Office)

%APPDATA%\Microsoft\Word
%LOCALAPPDATA%\Microsoft\Office\UnsavedFiles

Abrir el archivo .asd 

Cannot get the security descriptor of mailbox while connecting the disconnected mailbox

1. We need to find out the duplicate account with msExchMailboxGUID
2. To do that we need to use LDP.exe
3. Run ldp.exe to search via msExchMailboxGUID and let me know the results.
4. Start the Active Directory Administration Tool
   (LDP.exe).
5. On the Connection menu, click Connect.
6. In the Server box, type the name of a domain controller. Leave the default port selection as 389, unless you have set up your LDAP port configurations differently on the domain controller, and then click OK.On the Connection menu, click Bind.
7. Type the user name, password, and domain information for a user who has access to view the Active Directory root tree, and then click OK.
8. On the View menu, click Tree.
9. Leave the BaseDN box blank, and then click OK. By default, this switches the focus to the BaseDN of the root Active Directory tree
10. Expand the domain container (DC=example,DC=com), right-click the user's container, and then click Search.
11. Copy the new msExchMailboxGUID entry from the error, And modify it as \82\52\a2\13\36\69\fe\4f\a2\7f\47\2d\0e\1a\26\05 (for details how to modify the GUID to be able to search it in ldp.exe see example below)
12. Now search with this GUID with brackets (msexchangeguid=\82\52\a2\13\36\69\fe\4f\a2\7f\47\2d\0e\1a\26\05).
13. We must see our results with multiple user accounts.
14. Now we need to remove one of the account completely as it has got the same msexchMailboxGUID.
15. Once we do that we should be able to successfully add our disconnected mailbox or if we want to use a new account then we can remove both of them.

referencia: https://blogs.technet.microsoft.com/unable-to-connect-disconnected-mailbox/2014/06/12/cannot-get-the-security-descriptor-of-mailbox-while-connecting-the-disconnected-mailbox/