The following topic lists some of the issues that you might encounter while working with Microsoft 365, and the solutions or workarounds that you can use to resolve these issues.

Error Message: Quota Exceeded

Error Description: This error indicates that the user has exceeded their Microsoft storage quota.

Error Resolution: Increase the user's storage quota.

Error Message: Invalid User / Domain Change

Error Description: This error indicates that the user's email was not found due to a change in email, domain, or UPN.

Error Resolution: No action is required. The latest user account will be fetched and updated in the database. The backup will be re-triggered with the next schedule.

Error Message: Throttling Issue

Error Description: Microsoft 365 tenant is facing heavy throttling. The maximum possible retry limit is reached.

Error Resolution: This issue will be resolved automatically. The backup will be re-triggered with the next schedule.

Error Message: Invalid User Principal Name

Error Description: This error indicates that the user account is invalid, deleted, or lacks a license.

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: Mailbox Move in Progress

Error Description: This error indicates that the mailbox cannot be accessed using EWS because a mailbox move operation is underway, resulting in a temporary throttling error.

Error Resolution: Please try again later. If the issue persists, contact support.

Error Message: Server Busy

Error Description: This error indicates that the Microsoft server is busy or experiencing high traffic, making it temporarily unavailable to handle additional requests.

Error Resolution: Please try again later.

Error Message: Connection Failed Transient Error

Error Description: This error indicates that the connection to the server failed due to a transient error reported by the Microsoft server.

Error Resolution: Please try again later. If the issue persists, contact support.

Error Message: Message Size Exceeded

Error Description: This error indicates that the message you're attempting to restore exceeds the maximum allowed size for your mailbox. Please check if the email address is correct and/or if the user with the same email address has not been soft-deleted.

Error Resolution: If the issue persists, then contact support.

Error Message: Internal Server Error

Error Description: This error indicates that there is a problem on the server side of Exchange Online.

Error Resolution: Please try again later. If the issue persists, contact support.

Error Message: Internal Server Transient Error

Error Description: This error indicates that the server encountered an intermittent problem while processing a request.

Error Resolution: Please try again later. If the issue persists, contact support.

Error Message: Mime Content Invalid

Error Description: This error occurs during in-place restore when the Exchange server rejects an item due to corrupt or invalid MIME (Multipurpose Internet Mail Extensions) content. The issue typically stems from formatting problems, corrupt message data, or unsupported attachments.

Error Resolution: If the issue persists, contact support.

Error Message: Mime Content Conversion Failed

Error Description: This error occurs during in-place restore when the Exchange server rejects an item due to unconvertible MIME (Multipurpose Internet Mail Extensions) content. The issue typically stems from formatting problems, corrupt message data, or unsupported attachments.

Error Resolution: If the issue persists, contact support.

Error Message: Mailbox Configuration

Error Description: This error indicates that there is an issue with the settings or configuration of the mailbox you are attempting to restore.

Error Resolution: If the issue persists, contact support.

Error Message: Internal Error

Error Description: Unexpected error while running the job. Retrigger the job.

Error Resolution: If the issue persists, contact support.

Error Message: Task Aborted

Error Description: The task is canceled by the user.

Error Resolution: No action is required.

Error Message: Quota limit reached

Error Description: The user has exceeded their storage quota.

Error Resolution: Increase the storage quota for the user.

Error Message: User Group Not Found

Error Description: The user group is not found.

Error Resolution: No action is required. The backup of the rest of the group data will continue.

Error Message: Authorization Failed

Error Description: Cannot connect to the Microsoft 365 tenant due to authorization failure.

Error Resolution: re-install the Microsoft 365 app.

Error Message: Insufficient Permissions

Error Description: No permission to access the Microsoft 365 app data.

Error Resolution: Check if the app is listed, and if not, then re-install the app.

Error Message: Task Canceled

Error Description: The task is canceled by the user.

Error Resolution: No action is required.

Error Message: Site URL is Changed

Error Description: The SharePoint Site URL is changed in Microsoft 365 tenant.

Error Resolution: No action is required. The latest URL will be fetched and updated in the database.

The backup will be re-triggered with the next schedule.

Error Message: User Not Found

Error Description: The user is not found in the SharePoint site collection.

Error Resolution: No action is required. The backup of the rest of the site's data will continue.

Error Message: Token Invalid

Error Description: The Graph delta token used for fetching data from SharePoint for incremental backup is expired or no longer valid.

Error Resolution: No action is required. A full scan backup will be triggered for the Document Library.

Error Message: File is checked out

Error Description: The file is checked out and in Edit mode.

Error Resolution: Check in the file to allow the job activity.

Error Message: MS Team site channel update failed

Error Description: Team channel update is not supported for SharePoint.

Error Resolution: No action is required.

Error Message: Character Limit Exceeded

Error Description: The request URL contains more characters than the Microsoft limit of 400 characters.

Error Resolution: Change the folder hierarchy and ensure that the path is within 400 characters.

Error Message: Microsoft Server Error

Error Description: Server-side failure from Microsoft with 500 status code.

Error Resolution: No action is required. The API call will be retried.

Error Message: Token Invalid

Error Description: The Graph delta token used for fetching data from SharePoint for incremental backup is expired or no longer valid.

Error Resolution: No action is required. A full scan backup will be triggered for the Document Library.

Error Message: Entity is Deleted

Error Description: The requested entity is deleted in SharePoint site collection.

Error Resolution: No action is required. The backup of the rest of the site's data will continue.

Error Message: Microsoft List View Threshold Reached

Error Description: Microsoft's list view threshold is reached.

Error Resolution: No action is required. An alternate method is used back up a Document Library with more than 5k files.

Error Message: Virus Infected File

Error Description: Virus-infected files are skipped from the backup.

Error Resolution: No action is required. The backup of the rest of the files will continue.

Error Message: File Not Found

Error Description: The requested file was not found in the SharePoint site collection.

Error Resolution: No action is required. The backup of the rest of the site's data will continue.

Error Message: Connection Error From Microsoft

Error Description: Connection Error From Microsoft

Error Resolution: The job will continue by retrying the API request. If all retries are exhausted, the file is skipped, and the rest of the job will continue.

Error Message: The site level feature is not available in SharePoint Online

Error Description: The site level feature is not available in SharePoint Online

Error Resolution: Install the feature and try again.

Error Message: Site Not Found

Error Description: The site is removed from the M365 tenant and thus cannot be backed up.

Error Resolution: The site will be disabled for backup with the next schedule.

Error Message: Metadata Restore Failed

Error Description: Review the job activity details and download the logs to understand the failure.

Error Resolution: If the issue persists, contact support and share the log files.

Error Message: Site Feature Restore Failed

Error Description: Site Feature Restore Failed

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: Quick Launch Node Restore Failed

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: Top Navigation Bar Restore Failed

Error Description: Top Navigation Bar Restore Failed

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: Term Store Restore Failed

Error Description: Term Store Restore Failed

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: List Item Restore Failed

Error Description: Failed to add or update list item during the restore.

Error Resolution: Review the job activity details and download the logs to understand the failure.

Error Message: Site Not Found in SharePoint PowerShell

Error Description: Site Not Found in SharePoint PowerShell

Error Resolution: Restore completed partially. Please perform the restore again after sometime.

Error Message: SharePoint Site Busy

Error Description: The operation cannot be performed because the SharePoint site is busy.

Error Resolution: Please try again after some time.

Error Message: SharePoint Storage Issue

Error Description: Operation failed due to some issues with the SharePoint storage.

Error Resolution: If the issue persists, contact support.

Error Message: Cannot Restore Active Solution

Error Description: Restore failed as solution is active.

Error Resolution: Deactivate the solution and perform restore again.

Error Message: SharePoint Site Locked

Error Description: Backup failed as site is locked.

Error Resolution: Unlock site by changing the site access settings to either - ‘ReadOnly’ or ‘Unlock’ and perform backup.