![Exchange Properties Limits addition [MC884017]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-googledeepmind-17484975-1024x683.webp)
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.
Source: Microsoft
![Microsoft 365 admin center will support continuous access evaluation (CAE) [MC884015]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-pachon-in-motion-426015731-18204592-150x150.webp)
![ActiveX will be disabled by default in Microsoft Office 2024 [MC884011]](https://mwpro.co.uk/wp-content/uploads/2024/08/pexels-jenna-hamra-248942-804416-150x150.webp)
The upcoming update regarding Exchange Properties Limits is set to bring some changes that will impact both admins and users. Admins will need to ensure that the properties adhere to the new size and count limits, while users may experience restrictions on the amount of data they can input.
In terms of criticality, it’s important for organizations to be aware of these changes to avoid any disruptions to their Exchange properties. It’s crucial to review the new limits and make necessary adjustments to stay within the set boundaries.
Now, let’s add a dash of humor to lighten the mood: “It’s like setting boundaries for your data – think of it as giving your Exchange properties a little personal space to thrive within these new limits. Just like how we all need our space, even our digital data deserves some breathing room!”
Remember, stay within the limits, review the changes, and make sure your organization is prepared for the updates ahead.
how to get these details in an organization via PS
This page is highly relevant:
https://learn.microsoft.com/en-us/entra/identity/hybrid/connect/reference-connect-sync-attributes-synchronized
But covers some but not all the attributes mentioned in “Exchange Properties Limits addition [MC884017]”.
Firstly, it provides a comprehensive overview of how Microsoft Entra Connect Sync manages attribute synchronization between on-premises Active Directory and Microsoft Entra ID. This is crucial for understanding the new limits on Exchange properties and ensuring seamless integration.
Secondly, the page offers detailed guidance on customizing and filtering attributes during synchronization. This is essential for administrators to manage the new Exchange property limits effectively, ensuring that only necessary attributes are synchronized to avoid exceeding the limits.
For organizations operating in hybrid Exchange environments, the page is particularly valuable. It explains how attributes are synchronized and managed across both on-premises and cloud-based Exchange services, helping administrators navigate the complexities of hybrid setups.
Additionally, the page highlights the synchronization of device and user attributes, which are vital for maintaining a comprehensive Global Address List (GAL) and ensuring a seamless user experience. Understanding these attributes is key to managing the new Exchange property limits efficiently.
In summary, this page serves as an essential resource for administrators to implement and navigate the new Exchange Properties Limits effectively.