After reinstalling Outlook The Exchange Store Manager service and / or Dataloader service stopped archiving messages resp. attachments and ESM / DL log files show errors like the following
ERROR: Unable to determine which MAPI provider is installed: SHGetValue(HKLM,Software\Clients\Mail\ExchangeMAPI):
 The system cannot find the file specified.
When Debug logging level is enabled, you might see either of the following information:
DEBUG: SHGetValue(HKCU,Software\Clients\Mail,<Default>) returns 00000000
DEBUG: SHGetValue(HKLM,Software\Clients\Mail\ExchangeMAPI,DllPathEx) returns 00000002
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