#550 5.7.1 RESOLVER.RST.NotAuthorized; ## - Calendar Invite undelivered on behalf of another mailbox

Issue: 

Outlook shows warning that a calendar invitation cannot be sent on behalf of another mailbox
                                Or

#550 5.7.1 RESOLVER.RST.NotAuthorized; not authorized ## - Calendar Invite undelivered when sent on behalf of another/secondary/shared mailbox

Resolution:

The mailbox from which the calendar invite has to be sent must be primary always. 

Option 1: Configure the shared /alternate/secondary mailbox as primary account in outlook profile

Option 2: Access Shared/secondary/alternate mailbox calendar from Outlook Web Access (OWA)/Webmail and send the invite. 

Symantec End Point Protection Manager (SEPM) Console fails to Launch

Symantec Console fails to launch with below error.

An error as below is encountered when you try to start Symantec End Point Protection Manager (semsvc.exe) service from services console

"The Symantec End Point Protection Manager service on XXX started and then stopped. Some services stop automatically if they have no work to do, for example, the Performance Logs and Alerts Service"

Also note following errors in event viewer

Cause: 
 The Java Virtual Machine (jvm.dll) fails to load as the Microsoft Visual C++ Runtime Library Module (MSVCR71.DLL) is either missing from System32/SysWOW64 folders or corrupt

Resolution
To resolve the issue, 

1. Ensure that correct Java version is installed and enabled on the server. (Verify that Java is working in your browser using the Test Java page.)

2. Copy the above mentioned DLL File (MSVCR71.DLL) from a working server to non-working server in System 32/SysWOW64 folders

3. Start the SEPM Service now. 

Internet Explorer 10 hangs frequently

This is a known issue with Windows 7 and Internet Explorer 10. IE keeps hanging/freezing suddenly while you browse. 

You can follow couple of steps mentioned below to resolve the issue.

1.        Installing latest IE Cumulative fixes/updates
2.          Reset browser settings
3.          Run in compatibility mode (Press F12 while viewing the site and choose to run in compatibility mode ( IE 7/8/9) instead of downgrading the IE to old version.

4.       Turn-off/Disable Add-Ins which are not needed.

5.       Turning off hardware acceleration setting  in IE browser

Hardware acceleration uses your PC's GPU to speed up graphics-heavy tasks like video streaming or online gaming. Turning this off might help solve display problems.

         i.            Open Internet Explorer.

       ii.            Click the Tools button, and then click Internet options.

      iii.            On Advanced tab, select Use software rendering instead of GPU rendering.

     iv.            Click OK, and then restart Internet Explorer for the changes to take effect