Who is this article for?

Users who are experiencing issues with their Collection file.

No special access or permissions are required.

This article walks you through when the issue can occur, how to resolve it, and how to prevent it from happening again.

1. Issue

Shared Collection file has disappeared and/or there is a .tmp file in its place.

When editing locations, Mail Manager stores the changes in a .mmcollection.tmp file. Saving changes deletes the existing .mmcollection file and tries to rename the temp file to .mmcollection.

If it cannot complete that action for any reason (e.g.: file is locked or inaccessible), it can cause this issue to occur. This usually happens when multiple users try to edit Collections at the same time.

2. Solution

To resolve the issue if a .mmcollection.tmp file exists, rename it to remove the .tmp extension. This will be a copy of the file at the point Collections were last saved. 

To resolve the issue if no file exists at all, refer to the steps provided in our guide to recovering lost Collections.

To prevent the issue from happening in the future, avoid situations where multiple users are editing the Collection files at the same time. Additionally, advise your users to make sure the same Collection file appears in their list only once to decrease the likelihood of the problem occurring.