Microsoft 365 Backup: Temporary Limitations

This article explains the temporary backup limitations you may see for Microsoft 365 in SysCloud. It covers Outlook, OneDrive, SharePoint Online, Microsoft Teams, Teams Chat, Microsoft Calendar and Microsoft Contacts. Temporary limitations clear on their own, and in most cases you don't need to do anything.

What is a temporary limitation?

A temporary limitation means some data was not backed up in one backup attempt because of a short-lived condition, such as a Microsoft 365 request limit, a brief service outage or a network interruption.

• The backup status shows Retry in progress for the affected data.
• SysCloud retries the affected data automatically, usually in the next backup cycle.
• The rest of your backup continues as normal, and nothing already backed up is affected.

How to use this article

1. In SysCloud, open the backup details and note the message shown for the affected user or item, and its backup status.
2. Find that message in the quick reference table below.
3. Read the matching section for what it means and what to do.

Quick reference

Limitation	Message shown in SysCloud	Backup status	Action
1. API request limit reached	Calendar - API request limit reached Contacts - API request limit reached Outlook - API request limit reached API request limit reached (Teams Chat, Microsoft Teams)	Retry in progress	No action needed
2. Temporary connection issue	Calendar - Temporary connection issue Contacts - Temporary connection issue OneDrive - Temporary connection issue Outlook - Temporary connection issue Temporary connection issue (SharePoint, Teams Chat, Microsoft Teams)	Retry in progress	No action needed
3. Temporary operation conflict	Contacts - Temporary operation conflict OneDrive - Temporary operation conflict Temporary operation conflict (Microsoft Calendar, Outlook, SharePoint, Teams Chat, Microsoft Teams)	Retry in progress	No action needed
4. Backup could not start	Calendar - Backup initialization failed Contacts - Backup initialization failed OneDrive - Backup initialization failed Outlook - Backup initialization failed SharePoint - Backup initialization failed	Retry in progress	No action needed
5. Item could not be found	Calendar - Item unavailable Contacts - Item unavailable Outlook - Item unavailable SharePoint - Item unavailable	Retry in progress	No action needed
6. Outlook or OneDrive temporarily unavailable	OneDrive - Service temporarily unavailable Outlook - Mailbox database temporarily unavailable Outlook - Service temporarily unavailable	Retry in progress	No action needed
7. Outlook folder not found	Outlook - Parent folder not found	Retry in progress	No action needed
8. OneDrive download link expired	OneDrive - File download link expired	Retry in progress	No action needed

Limitations in detail

1. API request limit reached

Message shown in SysCloud:

• Calendar - API request limit reached
• Contacts - API request limit reached
• Outlook - API request limit reached
• API request limit reached (Teams Chat, Microsoft Teams)

Backup status: Retry in progress

What happened

Microsoft limits how many requests an app can make in a given period. The backup reached that limit, so some data was not backed up in this attempt. Microsoft calls this throttling.

What you can do

No action is needed. SysCloud retries the affected data automatically in the next backup cycle.

2. Temporary connection issue

Message shown in SysCloud:

• Calendar - Temporary connection issue
• Contacts - Temporary connection issue
• OneDrive - Temporary connection issue
• Outlook - Temporary connection issue
• Temporary connection issue (SharePoint, Teams Chat, Microsoft Teams)

Backup status: Retry in progress

What happened

A temporary network connection issue interrupted SysCloud's access to Microsoft 365 during the backup attempt.

What you can do

No action is needed. SysCloud retries the affected data automatically in the next backup cycle.

3. Temporary operation conflict

Message shown in SysCloud:

• Contacts - Temporary operation conflict
• OneDrive - Temporary operation conflict
• Temporary operation conflict (Microsoft Calendar, Outlook, SharePoint, Teams Chat, Microsoft Teams)

Backup status: Retry in progress

What happened

Microsoft 365 reported a temporary conflict while SysCloud was processing the affected data, for example because the data was being changed at the same time. The data was not backed up in this attempt.

What you can do

No action is needed. SysCloud retries the affected data automatically in the next backup cycle.

4. Backup could not start

Message shown in SysCloud:

• Calendar - Backup initialization failed
• Contacts - Backup initialization failed
• OneDrive - Backup initialization failed
• Outlook - Backup initialization failed
• SharePoint - Backup initialization failed

Backup status: Retry in progress

What happened

The previous backup run for the affected app could not start because of a temporary server error, so it did not complete.

What you can do

No action is needed. SysCloud attempts the backup again automatically in the next scheduled backup cycle.

5. Item could not be found

Message shown in SysCloud:

• Calendar - Item unavailable
• Contacts - Item unavailable
• Outlook - Item unavailable
• SharePoint - Item unavailable

Backup status: Retry in progress

What happened

The affected item could not be found during the backup attempt. It may have been deleted or made inaccessible after the backup started.

What you can do

No action is needed. SysCloud retries the item automatically in the next backup cycles for up to 5 days. If the item is still unavailable after that, it is not backed up.

6. Outlook or OneDrive temporarily unavailable

Message shown in SysCloud:

• OneDrive - Service temporarily unavailable
• Outlook - Mailbox database temporarily unavailable
• Outlook - Service temporarily unavailable

Backup status: Retry in progress

What happened

Outlook or OneDrive was temporarily unavailable during the backup attempt, for example because of a short outage or maintenance, so some data was not backed up.

What you can do

No action is needed. SysCloud retries the affected data automatically in the next backup cycle.

7. Outlook folder not found

Message shown in SysCloud:

• Outlook - Parent folder not found

Backup status: Retry in progress

What happened

The mailbox folder that holds the affected Outlook item could not be found during the backup attempt, for example because the folder was being moved or changed.

What you can do

No action is needed. SysCloud retries the item automatically in the next backup cycle.

8. OneDrive download link expired

Message shown in SysCloud:

• OneDrive - File download link expired

Backup status: Retry in progress

What happened

OneDrive provides a temporary link for each file download. The link expired before the affected file finished downloading.

What you can do

No action is needed. SysCloud requests a new download link and retries the file automatically in the next backup cycle.

Frequently asked questions

Do I need to start a backup manually?

No. SysCloud retries the affected data automatically.

Was any data lost?

No. The data is still in Microsoft 365. It wasn't copied in that attempt and is backed up when SysCloud retries. Nothing already backed up is affected.

When should I contact support?

If the same message keeps appearing for the same user or item over several backups in a row, contact SysCloud Support.

Why does this happen more after I first connect an account?

The first backup reads all of your data, which makes many more requests to Microsoft 365 than later backups. Request limits are reached more often during that first backup.

Need more help?

Contact SysCloud Support and include:

• A screenshot of the message shown in SysCloud, or the exact message text
• The affected user or item
• The Microsoft 365 app (for example Outlook or OneDrive)
• The date and time of the backup

Related article: Microsoft 365 Backup: Permanent Limitations