> For the complete documentation index, see [llms.txt](https://docs.inogic.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.inogic.com/attach2dynamics/installation/solution-upgrade/upgrade-solution-in-classic-ui.md).
# Upgrade Solution in Classic UI
To upgrade the SharePoint Security Sync solution in the Classic UI of Dynamics 365 CRM, follow these steps:
1. In your **Dynamics 365 CRM** interface, navigate to S**ettings > Customizations > Solutions.**
2. In the **All Solutions** view, click on the **Import** button (as shown in the screenshot below).
3. In the pop-up dialog, click on **Choose File**.
4. Select the updated solution package from your system and click **Next**.
5. Click **Next** again to proceed.
6. On the next screen, select the **Overwrite customizations** checkbox.
7. Click **Import** to begin the upgrade process.
Once the import is complete, the upgraded version of the solution will be available in your CRM environment.
{% hint style="info" %}
**Note: To successfully upgrade the solution, make sure you are importing a higher version over the existing lower version.**
{% endhint %}
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