There is no zimbra under HKEY_LOCAL_MACHINE\SOFTWARE so I just add it in. Have to wait to see if this works.
Below is the content of the attachment, which seems to be all the same (there are over 200 such message in the sync error folder under servers failure)
--
- <SyncError>
- <Request>
- <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
- <soap:Header>
- <context xmlns="urn:zimbra">
<userAgent name="ZimbraConnectorForOutlook" version="5.0.2817.11" />
<nonotify />
<noqualify />
<account by="id">1e8268f1-bf72-40ed-b444-f45ece1a2183</account>
<authToken>0_cb1001af82111614b562c557dcbff0b2a36eb 13e_69643d33363a31653832363866312d626637322d343065 642d623434342d6634356563653161323138333b6578703d31 333a313233333236383131373633353b747970653d363a7a69 6d6272613b</authToken>
<nosession />
</context>
</soap:Header>
- <soap:Body>
- <FolderActionRequest xmlns="urn:zimbraMail">
<action id="11" op="delete" />
</FolderActionRequest>
</soap:Body>
</soap:Envelope>
</Request>
- <Response>
- <soap:Envelope xmlns:soap="http://www.w3.org/2003/05/soap-envelope">
- <soap:Header>
- <context xmlns="urn:zimbra">
<change token="334110" />
</context>
</soap:Header>
- <soap:Body>
- <soap:Fault>
- <soap:Code>
<soap:Value>soap:Sender</soap:Value>
</soap:Code>
- <soap:Reason>
<soap:Text>cannot modify immutable object: 9</soap:Text>
</soap:Reason>
- <soap

etail>
- <Error xmlns="urn:zimbra">
<Code>mail.IMMUTABLE_OBJECT</Code>
<Trace>btpool0-9886:1233247173662:e0e5354f7b83c8a3</Trace>
<a t="IID" n="itemId">9</a>
</Error>
</soap

etail>
</soap:Fault>
</soap:Body>
</soap:Envelope>
</Response>
</SyncError>