ISSUE: Outlook Data File LowLevelError: (0x80070020)

Last modified: 2 years ago

Overview

During accessing and migration of PST file we can experience MAPI_E_DISK_ERROR with the bellow LowLevelError code: (0x80070020)

Version: 0 Component: Outlook Data File LowLevelError: 2147942432 (0x80070020) Context:
268828930 Message: Error in IMsgServiceAdmin::ConfigureMsgService:
MAPI_E_DISK_ERROR Error: The file \\?\UNC\global.corp.net\USLNS1\Groups\Archive.pst

Cause

Error code 0x80070020 can happen for following reasons:

Corrupt Windows file structure

Inaccessibility of the directory where Outlook wants to create PST file (error occurs if the path to save the PST is inaccessible/broken or the PST file is corrupt)

Solution

There are some suggestion that can be found in this Microsoft article:

Outlook error 0x80070002 when adding Data Files - Microsoft Community

But the error was most commonly seen for the pst files located on the file servers and these steps resolve the issue:

1. Copy the file from File server to a local drive (e.g. C:\Users\"UserAccount"\Documents)

2. Rerun Discovery for the user in Migration.

3. Set the original files from File server to status "Do Not migrate" in the UI

After PST files are rediscovered they will start migration.