OL extension with a single client not working (CANTLOADLIBRARY)

Hi there,

I am having issues with a single client (Win10Pro, Outlook 2013, Kopano OL extension 2.0.310, Kopano 8.6.7 with Z-Push 2.4.4).

ActiveSync works without any issues, but I am unable to use the Kopano extended features:

2018/08/26 13:45:55.139 (10,): Error: Exception in task AccountCheckDone: System.InvalidCastException: 
  Das COM-Objekt des Typs "Microsoft.Office.Interop.Outlook.ApplicationClass" kann nicht in den Schnittstellentyp
 "Microsoft.Office.Interop.Outlook._Application" umgewandelt werden. Dieser Vorgang konnte nicht durchgeführt werden, 
 da der QueryInterface-Aufruf an die COM-Komponente für die Schnittstelle mit der  IID "{00063001-0000-0000-C000-000000000046}"
 aufgrund des folgenden Fehlers nicht durchgeführt werden konnte: 
    Fehler beim Laden der Typbibliothek/DLL. (Ausnahme von HRESULT: 0x80029C4A (TYPE_E_CANTLOADLIBRARY)).
   bei System.StubHelpers.StubHelpers.GetCOMIPFromRCW(Object objSrc, IntPtr pCPCMD, IntPtr& ppTarget, Boolean& pfNeedsRelease)
   bei Microsoft.Office.Interop.Outlook.ApplicationClass.get_Session()
   bei Acacia.Stubs.OutlookWrappers.AddInWrapper.SendReceive(IAccount account, AcaciaTask after)
   bei Acacia.ZPush.ZPushAccounts.<Start>b__7_1()
   bei Acacia.Utils.AcaciaTask.Execute()

All the buttons are inactive in Outlook


but the kdiscover dns record is present, resolvable and correct:

domain.tld     text =
        "kdiscover https://mail.domain.tld/webapp/"

Z-Push does not show any errors:

Synchronized devices of user: <user>
DeviceId:               3949ffdce8a24ac48abc76ea58433b69
Device type:            WindowsOutlook
UserAgent:              Outlook/15.0 (15.0.5053.1000; MSI; x86)
ActiveSync version:     14.0
First sync:             2018-08-26 13:45
Last sync:              2018-08-26 13:50
Sync Period:            unlimited (0)
Total folders:          11
Short folder Ids:       Yes
Synchronized folders:   7
Synchronized data:      Emails(4) Contacts Calendars Tasks
Additional Folders:     none
Status:                 Not available
WipeRequest on:         not set
WipeRequest by:         not set
Wiped on:               not set
Policy name:            default
Attention needed:       No errors known

What I’ve tried already:

  • removing the registry-key with the IID mentioned in the errormessage
  • Removing / Reinstalling OL extension stable
  • Installing OL extension nightly
  • creating a new Outlook profile
  • Z-Push clearloops / fixstates

but all to no avail… any ideas to fix this problem ?
It’s the only client having this issue, all others seems to work just fine (same software-configurations).

Regards Peter

Hello @petervbeck,

now its time to guess the error… I would guess its not the OLE which is causing the error but some libraries in Outlook.
Since you only got this error on one client i would try to reinstall outlook and if this wont work, do a clean installation from windows.

Its a bit harsh, but my stomache tells me it will work after that :)

best regards

Hi Peter,

are there any errors in Microsoft Office Alerts at that time in the Event Viewer (Start the Event Viewer, then Applications and Services Logs->Microsoft Office Alerts)?