Have you enabled folder references on your mail files?

It's step 16g in the config guide:

https://www.ibm.com/support/knowledgecenter/SS4RQV_1.0.0/admin/topics/vop_configuring_server.html

g. Run the Convert utility with the -m argument on the server to enable folder references in mail files. For more information on this utility, see Upgrading mail files with the mail conversion utility in the Domino documentation.

Hi

Thanks for your response. Yes I have already enabled the folder references and still encounter the same issues. 

I have followed all the steps in the below article (I even updated the mail template, rather than copying them in as I was not sure if this was the problem): https://www.ibm.com/support/knowledgecenter/SS4RQV_1.0.0/admin/topics/vop_configuring_server.html

Ian

It could be a folder version issue.  Try upgrading the folder design to the latest.

You could also create a brand new mail file to test with just to make sure it's not the database.

Hi

So I have created a brand new email file and this time, the Inbox does load (from the Mail Icon at the top), however if I try to filter through the folders on the left (Ie All Documents, Inbox etc), I still get an error and receive the same errors on the Domino Console

[073C:000D-0EE0] 01/02/2017 10:29:07   HTTP JVM: A required argument has not been provided. For more detailed information, please consult error-log-0.xml located in e:/Lotus/Domino/data/domino/workspace/logs
[073C:000D-0EE0] 01/02/2017 10:29:07   HTTP JVM: Can't open folder: . For more detailed information, please consult error-log-0.xml located in e:/Lotus/Domino/data/domino/workspace/logs

Does anything else need to be enabled on the Domino Server (ie another task) that could be causing the issue?

Also I am not sure why this does not work on my current mail file as it has been upgraded to latest template, view indexes re-created, FT Indexes created.....

There is nothing special that I can think of, I just installed FP7 and the VOP hot fix.

Just thinking out loud.  On my setup I'm running VOP on the mail server so it's all local so no need to access the mail file over the network.  Is yours?

Ok, Yes I am running VOP on the mail server as well. The only thing I can think is that we are running Traveler on the same mail server, not sure whether this is causing any issues....

I'm running Traveler on the box too.

I guess it could be a bug.

... that second error says there's a folder that isn't set. It's set to null text. It does look as if some needed folder location is missing.

I'm not sure what the .xml output log says, so I'm not sure it'll be enlightening.

I would never have found that, nice work!  Just enabled the setting on my config and sure enough the same error occurred.

Thanks guys for all your support and especially Yingle Jia as this was the issue. Soon as i Disabled the setting this worked perfectly!!!