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Office 365 Backup, Veeam

Veeam Backup for Microsoft 365 SharePoint “The remote server returned an error: (429)”

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The nuisance error, “The remote server returned an error: (429)” in Veeam Backup for Microsoft 365 indicates that you have exceeded the request rate limit imposed by Microsoft. This occurs when too many requests are made to Microsoft within a specific time frame. We commonly see this during the initial Veeam for M365 backup and the error resolves itself during the automatic retry, which is enabled by default. If you would like to make changes on the backend in Microsoft, such as editing Retry-After headers or decorating traffic, you may refer to this Microsoft Article on how to avoid getting throttled in SharePoint. If the (429) error persist, please reach out to us at Support@Managecast.com. We’re happy to assist in troubleshooting and resolving your issue.

Office 365 Backup, Veeam

Veeam for Microsoft 365 “Item may have a virus reported by the virus scanner plug-in” warning

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Veeam will report when an “Item may have a virus reported by the virus scanner plug-in.” This warning is caused when Veeam for M365 attempts to backup an item that the built-in Microsoft 365 virus protection has flagged as possibly being infected. If you were to attempt to download the file that is reporting the malware/virus you should be met with a “This file is compromised” message: It is recommended that you get your security team involved to investigate if the item has been compromised. Additionally, removing the infected item will clear up the warning in Veeam for M365. Additionally information on Microsoft built-in virus protection can be found HERE. If the item that is reporting as potentially having a virus is downloadable and found to be a healthy file, please reach out to Support@Managecast.com and we can assist in investigating the issue.

Office 365 Backup, Veeam

Veeam Backup for Microsoft 365 “Failed to find Team mailbox owner account”

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The “Failed to find Team mailbox owner account” error can be caused by the owner of the mailbox being moved, or if the owner no longer has a licensed assigned. Resolving either of these will also resolve your M365 issues. Here are the steps to resolving the cause to either issue: If the owner was removed from the mailbox: Assigned owner does not have a license: As these are two of the most common causes of the “Failed to find Team mailbox owner account” error, there may be other issues causing the error. If your issues persist, please reach out to Support@Managecast.com for assistance. Additional Microsoft information on assigning a Team mailbox owner can be found HERE, and assigning a license can be found HERE.

Office 365 Backup, Veeam

Veeam for Microsoft 365 Mailbox does not have a valid Microsoft 365 license warnings

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Veeam Backup for Microsoft 365 can only backup mailboxes that are licensed*. If a mailbox is selected to backup and does not have a licensed assigned, Veeam will report a warning stating the “Mailbox does not have a valid Microsoft 365 license.” There are two options for resolving the “Mailbox does not have a valid Microsoft 365 license” warning. Option 1: Assign a valid license to the mailbox that you would like to backup. Option 2: If the mailbox does not need to be backed up, then you can exclude the mailbox. Below are the steps to exclude a mailbox: If you are backing up your entire organization: If you have specific objects selected to backup: * Shared and resource mailboxes are the exception, and do not require a license to backup. If the warning persist, or would like any other Veeam assistance, please reach out to Support@Managecast.com

Veeam

Veeam Explorer for Microsoft Exchange Timeouts

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A possible issue when restoring a large number of items with the Veeam Explorer for Microsoft Exchange can be operations timing out. Especially when using the advanced search feature in large mailboxes. Error messages related to these timeouts can pop-up during the restore with the following message: Connection to server was unexepectedly close. See log file for details. Error: This request operation sent to net.tcp://127.0.0.1:59148/ArchiverExchangeServiceOrg did not receive a reply within the configured timeout (00:01:00). The time allotted to this operation may have been a portion of a longer timeout. This may be because the service is still processing the operation or because the service was unable to send a reply message. Please consider increasing the operation timeout (by casting the channel/proxy to IContextChannel and setting the OperationTimeout property) and ensure that the service is able to connect to the client. In the Veeam Explorer for Exchange log files (C:\ProgramData\Veeam\Backup\ExchangeExplorer\Logs) these errors may also be present: Error: The message could not be transferred within the allotted timeout of 00:01:00. There was no space available in the reliable channel’s transfer window. The time allotted to this operation may have been a portion of a longer timeout. Error: Unable to read data from the transport connection: A blocking operation was interrupted by a call to WSACancelBlockingCall. Error: A blocking operation was interrupted by a call to WSACancelBlockingCall To resolve this issue, the timeout can be increased by editing the Exchange Explorer config.xml file. To do this, follow these steps: Make sure that the Exchange explorer is closed and no restore sessions are running. If you are performing the restore from a Veeam for Microsoft 365 server, make sure no jobs are running and stop the Veeam Services: Next, open a text editor and edit the file: C:\ProgramData\Veeam\Backup\ExchangeExplorer\Config.xml Add the following text between the tags in the file: <WCF OperationTimeout=”3600″ />. Don’t modify any other lines in this file. Example: Finally, save the file and start the Veeam for Microsoft 365 services again. After following these steps try the restore again. The time-out issues should now be resolved.

Office 365 Backup, Veeam

Veeam for Microsoft 365 “User ‘USERNAME’ does not have a valid Microsoft 365 license with SharePoint plan enabled” Warning

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If a user is set to back up a SharePoint but doesn’t have a SharePoint plan, you’ll start seeing warnings pop up in your Veeam for Microsoft 365 backups. There are two options for resolving the “User ‘USERNAME’ does not have a valid Microsoft 365 license with SharePoint plan enabled” warning. Option 1: Contact Microsoft to add a SharePoint plan to the current users’ license. Option 2: If the SharePoint site does not need to be backed up, or is not licensed to, then you can exclude the SharePoint for the user. Below are the steps to exclude a SharePoint for a specific user: If you are backing up your entire organization: If you have specific objects selected to backup: If the warning persist, please reach out to Managecast and we are happy to help resolve this and any other Veeam issues.

Office 365 Backup, Veeam

Veeam M365 “Cannot change web part export mode to ‘All’, because custom scripting is disabled for site” Warnings

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When setting up your Veeam for Microsoft 365 backups, you may select to backup WebParts. If Custom Scripts are not enabled, you will likely run into the warning “Cannot change web part export mode to ‘All’, because custom scripting is disabled for site.” By default, both the “Allow users to run custom script on personal sites” and “Allow users to run custom script on self-service created sites” options are set to “Prevent.” Here are quick steps to get your web parts backing up successfully: Additional information can be found here at Veeam and Microsoft. If you’d like assistance resolving your Veeam for M365 warnings, please reach out to Managecast. We’re happy to assist in troubleshooting and resolving your issue.

Office 365 Backup, Veeam

Veeam Backup for Microsoft 365 “The remote server returned an error: (429).”

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The code (429) in Veeam Backup for Microsoft 365 indicates that you have exceeded the rate limit imposed by Microsoft. It occurs when too many requests are made to Microsoft within a specific time frame. Here are some recommendations in handling the (429) throttling issue: • Upgrade Veeam. Veeam has released Veeam Backup for Microsoft 365 7.0.0.3007 which addresses the (429) warning. • Allow retries. (429) warnings normally clear up on a retry. Retries should be enabled by default. If retries are not enabled, you may turn these on in the last tab of the job settings. • Temporarily disable EWS Throttling Policy. Additional information can be found here at Veeam and Microsoft. If the (429) error persist, please reach out to Managecast. We’re happy to assist in troubleshooting and resolving your issue.

Office 365 Backup, Veeam

Veeam Backup for Microsoft 365 “Failed to find group owner account” error and how to resolve it

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The “Failed to find group owner account” error occurs when a Microsoft 365 group does not have an assigned owner. To fix this error, you can follow these steps: Additional information can be found in the Veeam Article KB3105 If you continue to experience issues with your Veeam M365 backups, please reach out to Managecast and we can assist in resolving your issues.

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