Exchange Properties Limits addition
From Microsoft 365 Message Center Archive by Merill Fernando · Microsoft may not have sent this notice to your tenant.Rollout
Rollout dates are often only in the text. When Microsoft moves them, the change shows under "What changed".
What the notice says
Microsoft’s text, safely structuredUpdated September 6, 2024: Thank you for your feedback. We are going to provide a new Message center post shortly with more details to help you understand and act on this change. We apologize for the inconvenience, and you can safely disregard this message.
We're making some changes to allowed size and count of values for various Exchange properties, here are the definition of the limits:
- Max length: Size of each value
- Max Count: Total count of values
When this will happen
Changes will be applied in two phases between late September 2024 and late November 2024
How this affects your organization
When this change takes effect, you will not be able to exceed the allowed limits
Starting late September 2024, we're adding the following limits to these properties:
Phase1:
| Property | Max Length | Max Count |
|---|---|---|
| CloudMSExchUCVoiceMailSettings | 1123 | 20 |
| MSExchArchiveName | 512 | 20 |
| MSExchResourceMetadata | 1024 | 20 |
| MSExchSenderHintTranslations | 500 | 20 |
| ExchangeResources | 1024 | 20 |
Starting late November 2024, we'll be adding limits to the following properties:
Phase 2:
| Property | Max Length | Max Count |
|---|---|---|
| CloudMSRtcPolicyAssignments | 128 | 45 |
| MSExchResourceSearchProperties | 1024 | 35 |
| CloudMSExchUserHoldPolicies | 40 | 1150 |
| MSExchExtensionCustomAttribute1 | 2048 | 750 |
| MSExchExtensionCustomAttribute2 | 2048 | 750 |
| MSExchExtensionCustomAttribute3 | 2048 | 400 |
| MSExchExtensionCustomAttribute4 | 2048 | 400 |
| MSExchExtensionCustomAttribute5 | 2048 | 250 |
| ValidationError | 948000 | 10 |
| ProxyAddresses | 1123 | 1200 |
What you can do to prepare
Review the new limits and take action as appropriate for your organization.
What changed
Between archive captures, newest first- Tags
Admin impact→ Updated message, Admin impact
Updated September 6, 2024: Thank you for your feedback. We are going to provide a new Message center post shortly with more details to help you understand and act on this change. We apologize for the inconvenience, and you can safely disregard this message. We're making some changes to allowed size and count of values for …
- Tags
- · first version seen
Related public changes
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Not confirmed here
What this page cannot tell you- Whether your tenant is affected: this is Microsoft's notice, not a check of your settings.