Purview Information Protection client fails to install on Windows 11 - requires KB2533623

Question

Purview Information Protection client fails to install on Windows 11 - requires KB2533623

Borut Lape 25

Hi,

I am trying to install the latest version of Microsoft Purview Information Protection Client on Windows 11 Pro 24H2, from the official link: Download Microsoft Purview Information Protection client from Official Microsoft Download Center.

The installation fails with the error code 2753, following a message that .Net Framework 4.6.2. must be installed, but:

.Net framework 4.8.1. is already installed and I cannot install an older version.
In the log file, it says that setup fails due to missing KB2533623, which is an obsolete KB for Windows 7????

Log message:

[6E1C:3B98][2025-03-18T09:20:04]i301: Applying execute package: MSIP.Setup.Main.msi, action: Install, path: C:\ProgramData\Package Cache{77EC9C14-2103-4084-8E41-17BF56B15CBB}v3.1.105.0\MSIP.Setup.Main.msi, arguments: ' ARPSYSTEMCOMPONENT="1" MSIFASTINSTALL="7" ENABLETELEMETRY="0" UPDATESOURCE="" UPDATECHANNEL="" SERVICELOCATION="" POWERSHELLONLY="" KBKB2533623MISSINGTEXT="The Microsoft Purview Information Protection client requires KB2533623." SCANNERISRUNNINGTEXT="One or more issues caused the setup to fail. If the computer is running the Microsoft Information Protection scanner, stop the scanner service, and try to upgrade the client again. If the upgrade is then successful, in PowerShell, run Update-ScannerDatabase to complete the upgrade for the scanner." NETWORKDISCOVERYISRUNNINGTEXT="One or more issues caused the setup to fail. If the computer is running the Microsoft Purview Information Protection Network Discovery, stop the network discovery service, and try to upgrade the client again. If the upgrade is then successful, in PowerShell, run Update-ScannerDatabase to complete the upgrade for the network discovery."'

Setup error 1:

User's image

Setup error 2:

User's image

Installation of .Net Framework 4.6.2.

User's image I tried disk cleanup removing all obsolete Windows temp and system files, but no help :(

Smaran Thoomu 24,260 Reputation points Microsoft External Staff Moderator

2025-03-19T13:14:49.6466667+00:00

Hi @Borut Lape
Based on your description, this issue appears to be related to the Microsoft Purview Information Protection Client (AIP client). Could you please confirm if you're referring to sensitivity labels and encryption features under Purview, or if this is specifically about installing the AIP client on Windows 11?

Meanwhile, I’m looking into this and will update you shortly. Let me know if you can share any additional details.
Borut Lape 25 Reputation points

2025-03-19T13:34:21.2166667+00:00

Hi, @Smaran Thoomu

I am referring specifically about installing the AIP client, which is successfully installed and used company wide. I can share more details if needed.
Smaran Thoomu 24,260 Reputation points Microsoft External Staff Moderator

2025-03-19T16:18:06.4833333+00:00
Borut Lape Thanks for confirming that this is related to the AIP client installation. To troubleshoot the issue, could you please try the following steps?

Uninstall and Reinstall .NET Framework – Since the error message references .NET Framework 4.6.2, try uninstalling and reinstalling the latest .NET Framework 4.8.1 (which you already have).

Restart Your System – After reinstalling, restart your machine to ensure all changes take effect.

Attempt Installation Again – Try installing the AIP client after the restart and see if the issue persists.
Borut Lape 25 Reputation points

2025-03-20T12:35:43.7033333+00:00

Hi Smaran,

thank you for your suggestion, but there is no straightforward way to do this in Windows 11, since .NET Framework is built into the system.

I found tons of discussions on how to do this, but didn't find appropriate solution.

I tried running .NET Framework Repair Tool, removing/adding .NET Framework from Windows features, I ran sfc /checknow, but no issue detected...

Accepted answer

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Smaran Thoomu 24,260 Reputation points Microsoft External Staff Moderator

2025-03-19T13:14:49.6466667+00:00

Hi @Borut Lape
Based on your description, this issue appears to be related to the Microsoft Purview Information Protection Client (AIP client). Could you please confirm if you're referring to sensitivity labels and encryption features under Purview, or if this is specifically about installing the AIP client on Windows 11?

Meanwhile, I’m looking into this and will update you shortly. Let me know if you can share any additional details.
Borut Lape 25 Reputation points

2025-03-19T13:34:21.2166667+00:00

Hi, @Smaran Thoomu

I am referring specifically about installing the AIP client, which is successfully installed and used company wide. I can share more details if needed.
Smaran Thoomu 24,260 Reputation points Microsoft External Staff Moderator

2025-03-19T16:18:06.4833333+00:00

Borut Lape Thanks for confirming that this is related to the AIP client installation. To troubleshoot the issue, could you please try the following steps?

Uninstall and Reinstall .NET Framework – Since the error message references .NET Framework 4.6.2, try uninstalling and reinstalling the latest .NET Framework 4.8.1 (which you already have).

Restart Your System – After reinstalling, restart your machine to ensure all changes take effect.

Attempt Installation Again – Try installing the AIP client after the restart and see if the issue persists.
Borut Lape 25 Reputation points

2025-03-20T12:35:43.7033333+00:00

Hi Smaran,

thank you for your suggestion, but there is no straightforward way to do this in Windows 11, since .NET Framework is built into the system.

I found tons of discussions on how to do this, but didn't find appropriate solution.

I tried running .NET Framework Repair Tool, removing/adding .NET Framework from Windows features, I ran sfc /checknow, but no issue detected...

Answer 1

Catherine Kyalo 1,935 Microsoft Employee

Hi @Borut Lape

Thank you for sharing the specific AIP registry that should be deleted to ensure a successful re-installation of Purview Information Protection client.

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If you find the answer above helpful, please Accept the answer to help anyone in the community who might have a similar question to quickly find the solution.

Answer 2

Borut Lape 25

Hi Catherine,

thank you for your effort.

I managed to install it by previously deleting the registry key related to AIP:

User's image

Best regards,

Borut

Catherine Kyalo 1,935 Reputation points Microsoft Employee

2025-03-24T14:30:13.0133333+00:00

Thanks for this Valuable info!

I will update the answer to reflect this specific registry key:

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Purview Information Protection client fails to install on Windows 11 - requires KB2533623

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