When sending email in Outlook 2013 getting 0x800C8100 error

Dec 16, 2014 at 6:31 PM
What is 0x800C8100 error? Outlook reports Unknown Error. I've searched for 0x800C8100 in google and nothing returns on what exactly does this error mean.

We have our own message store provider. We were able to send emails before, but no longer can because of that error. We are not sure what Outlook is doing.
Coordinator
Dec 16, 2014 at 8:19 PM
Um - what gave you that error?
Dec 16, 2014 at 10:23 PM
That's what we are trying to find out. Our transport provider isn't returning 0x800C8100.
Coordinator
Dec 17, 2014 at 1:09 PM
oakietx wrote:
That's what we are trying to find out. Our transport provider isn't returning 0x800C8100.
Ok - I'll try my question differently: Did a function call return this error? Did it show up in some dialog box? Did you find it in the event logs? Was it delivered to you on a stone tablet? Where did you get this error from that prompted you to post this question? You got it from somewhere...
Dec 17, 2014 at 3:53 PM
Of course the error code came from Moses on a stone tablet that was dropped to us from a stork...

From Outlook's Send/Receive error window. And this from Outlook's OPMLog.log file:

2014.12.16 14:45:48 Top of Personal Folders: ReportStatus: RSF_COMPLETED, hr = 0xffffffff800c8100
2014.12.16 14:45:48 Top of Personal Folders: Synch operation completed
2014.12.16 14:45:48 Sending done, Error code = 0x800c8100