User Profile Event trigger 1534

Hello Ganesh Rao (Augmento Labs),

Thank you for posting in Microsoft Community forum.

I think you can back up the DefaultAssociationsProfileHandler key on this Windows Server 2022 first and try to delete it. And monitor if there is any unwanted side effects into your system in the future.

If so, you can import the deleted DefaultAssociationsProfileHandler key again.

Steps for your reference:

1.Open Regedit and navigate to the following two keys
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileNotification

And
HKEY_LOCAL_MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows NT\CurrentVersion\ProfileNotification

2. Under ProfileNotification check if you have the DefaultAssociationsProfileHandler key.
3. Export the DefaultAssociationsProfileHandler key at each location.
4. Delete the DefaultAssociationsProfileHandler key at each location.
5. Reboot PC to verify.

I hope the information above is helpful.

If you have any question or concern, please feel free to let us know.

Best Regards,

Daisy Zhou

Thank you for your guidance regarding the Event ID 1534 issue.

We wanted to provide an update:

• We have already deleted the CLSID {0A556D98-CFEE-4D84-82A7-00377F939198} from the path:
  Computer\HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileNotification\DefaultAssociationsProfileHandler
• Since making this change and monitoring the RD02 server for over a month, we have not encountered any warnings or issues related to Event ID 1534.

We do have a few follow-up questions for further clarity:

1. Are the TDL keys and the CLSID {0A556D98-CFEE-4D84-82A7-00377F939198} associated in any way, or are they entirely different entities in this context?
2. Given the resolution achieved by deleting the CLSID, is further action involving the TDL key necessary, especially since it does not exist in our infrastructure servers?
3. Could the deletion of this CLSID potentially affect the operating system or server functionality in any way? So far, we have not observed any negative impact, but we want to ensure long-term stability and compatibility.

Your insights on these points would be greatly appreciated.

Hello

Greetings!

Here are the answers for your references.

1.Are the TDL keys and the CLSID {0A556D98-CFEE-4D84-82A7-00377F939198} associated in any way, or are they entirely different entities in this context?

A1: I think they are entirely different entities in this context.

Because I can see every key under ProfileNotification has a CLSID value.

For example,

SettingProfileHandler: {2c86c843-77ae-4284-9722-27d65366543c}

TDL: {B31118B2-1F49-48E5-B6F5-BC21CAEC56FB}

2.Given the resolution achieved by deleting the CLSID, is further action involving the TDL key necessary, especially since it does not exist in our infrastructure servers?

A2: No.

3.Could the deletion of this CLSID potentially affect the operating system or server functionality in any way? So far, we have not observed any negative impact, but we want to ensure long-term stability and compatibility.

A3: I am not sure this There is a high probability that it will not affect because I saw someone on the Internet who had a similar problem and solved the problem using a similar method. ）However, you should have a backup of the registry. Please keep monitoring.

If you have any question or concern, please feel free to let us know.

Best Regards,
Daisy Zhou

Thank you for your detailed response and the steps provided.

We wanted to confirm one key aspect:

We have already deleted the CLSID {0A556D98-CFEE-4D84-82A7-00377F939198} from the path:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileNotification\DefaultAssociationsProfileHandler on a production server. Since implementing this change, we have not observed any warnings, errors, or unexpected behavior on the server after monitoring it for over a month.

Could you please confirm if this deletion is considered safe for long-term use, or if there are any potential risks or side effects we should be aware of?

Your confirmation would be greatly appreciated as it will help us ensure the stability of our environment.

Hello

Greetings！

Modifying or deleting entries in the Windows Registry may have significant impacts on system stability and performance. The key you mentioned, HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProfileNotification\DefaultAssociationsProfileHandler{0A556D98-CFEE-4D84-82A7-00377F939198}, it seems to be related to default application associations in Windows.

Deleting this key could have consequences such as:

1. Loss of Default Associations:

It may disrupt the way Windows handles certain file types or protocols by default.

2. System Instability:

Removing registry keys improperly can cause system errors or prevent certain features from functioning correctly.

3. Profile Configuration Issues:

It may affect user profiles and their configurations, leading to unexpected behaviors.

Before making changes to the registry, it's highly recommended to:

1. Backup the Registry:

Export the key you're planning to delete, or create a system restore point.

2. Understand the Key's Function:

Research and verify the key's exact role and dependencies, if possible.

Best Regards,
Daisy Zhou