This is very often when you encounter this problem for end users that IM conversation is not getting save in Outlook clients. For troubleshooting, You may have reinstalled Lync client and Outlook on desktop/laptop. Later on you ended with changing desktop/laptop without any fix.
I found below steps to resolve this problem which was causing due to MAPI sync in Outlook and Lync.
1. Open Outlook without the Lync client open.
2. Delete the Conversation History folder (export it to file if there are any conversations in there that you would like to save).
3. Close Outlook.
4. Make sure that the Lync client and the Outlook clients are completely closed (no Oulook.exe or Communicator.exe processes in Task Manager).
5. Click Start, Run and type “outlook /resetfolders” in search for folders of files
6. Start the Lync client and have a conversation.
7. Wait for up to 5 minutes for the conversation to be saved to Conversation History Folder.
If this does not work, try below steps:
1. Open Outlook without the Lync client open.
2. Delete the Conversation History folder (export it to file if there are any conversations in there that you would like to save).
3. Close Outlook.
4. Make sure that the Lync client and the Outlook clients are completely closed (no Oulook.exe or Communicator.exe processes in Task Manager).
5. Uninstall the Lync client completely.
6. Re-install the Lync client
7. Start the Lync client and have a conversation.
8. Wait for up to 5 minutes for the conversation to be saved to Conversation History Folder.
All about Microsoft 365 & Teams 
hi,
by mistake i have deleted my conversation history folder in outlook.. so chat history i snot getting saved in the Conversation history folder.
Please suggest how to get back the folder.
I am using Microsoft lync 2010 version.
Savitha
Hi Savitha,
You just need to close outlook and lync and then go into run and executed “outlook.exe /resetfolders”
Hi,
Did you use outlook.exe /resetfolders ? It will create new conversation history folder
i kept on repeating the outlook.exe /resetfolders and outlook /resetfolders . but the conversation history still not created.
My Lync Conversation History folder stopped saving after I moved to a new PC. I tried your 1st suggestion above (deleting and re-creating Conversation History folder), and it’s working again. Also, it’s now populated will all conversations from past several days that were previously missing.
Thanks.
Happy to see its helped to you 🙂
Hi ,
I have a similar issue. I am using communicator instead of lync. I also have the same issue.
I tried executing outlook.exe /resetfolders, still conversation history folder is missing.
Any help on this?
Thanks,
Senthil
It takes some time since you run the command. uncheck the outlook cache mode and then try to run
Hi ,
It worked after some time.
Thanks,
Senthil
Hi,
In my Lync conservation history folder stopped saving automatically i have tried 2 method for resolving this issues but still have same issues before execute this command i deleted conservation history folder then re-open the Lync. Once open the outlook conservation history folder appear but not able to see the any saved file.
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Hi,
I have same problem still .I tried executing outlook.exe /resetfolders, still conversation history folder is missing.
Any help on this?
Thanks,
tulasi.
Are you able to resolve EWS from laptop/desktop having issue ?
It worked. Thanks very much
You are welcome 🙂 keep watching..
I have deleted a conservation history folder from my outlook . And not able to get back also.
Please help me to get back the conservation folder
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Does anyone know is a user migrates from OCS to MS Lync will that overwrite the coversation history in Outlook or should it retain all old OCS conversations?
Which version of lync you are migrating ?