When trying to access notifications panel in windows, getting error "exception processing message 0xc0000005 unexpected parameters"

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When trying to access notifications panel in windows, getting error "exception processing message 0xc0000005 unexpected parameters"

Vishal K 0

When trying to access notifications panel in windows, getting error "exception processing message 0xc0000005 unexpected parameters"
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I also tried In-place upgrade in Windows 11 ... That as well failed

Screenshot 2025-09-12 035022

Also My calendar is also not opening from taskbar .. it instantly crashes in milliseconds

Need a resolution please

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Answer 1

Hendrix-V 14,680 Microsoft External Staff Moderator

Hi Vishal K,

Thank you for reaching out to the Microsoft Q&A Forum!

The error message “exception processing message 0xc0000005 unexpected parameters” and the issue with the calendar crashing usually occurs due to corrupted system files, driver conflicts, or issues with Windows components like the Action Center and Calendar. Based on your given details of the error, here are some steps you can follow to resolve this:

1 - Run System Repair Tools

Open Command Prompt (Admin) and run these commands one by one:

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth

Restart your PC after completion.

2 - Reset Notifications and Calendar Components

Open PowerShell (Admin) and run:

Get-AppxPackage *windows.immersivecontrolpanel* | Reset-AppxPackage
Get-AppxPackage *windowscommunicationsapps* | Reset-AppxPackage

3 - If In-Place Upgrade Failed

Use the Windows 11 ISO from Microsoft official site and select Keep personal files and apps during setup.

I look forward to receiving your update and I'm willing to collaborate with you till we resolve the issue. Please keep me informed.

Hendrix-V 14,680 Reputation points Microsoft External Staff Moderator

2025-09-14T07:46:23.64+00:00

Hi Vishal K,

Just checking in to see if the above information was helpful. If you have any further updates on this issue, please feel free to post back. If the answer is helpful, please click "Accept Answer" and kindly upvote it. Accepting an answer helps us track the effectiveness of our support efforts.
Vishal K 0 Reputation points

2025-09-14T18:40:45.14+00:00

Did all the 3 ways, Issue still exists

Windows Install says this
Hendrix-V 14,680 Reputation points Microsoft External Staff Moderator

2025-09-20T03:41:21.6766667+00:00
Hi Vishal K,

Thank you on updating on the issue.

Please perform a Clean Boot and retry Upgrade

Press Win + R, type msconfig, go to Services, check Hide all Microsoft services, then click Disable all.

In Startup, open Task Manager and disable all startup items.

Restart and run the upgrade again.

That should do the work. Please keep me updated after taking these steps

Thanks!

Answer 2

Jeronimo Fuerte 39,435 Independent Advisor

Hi! That error message, often points to a damaged shell component or a third-party service/driver blocking the notifications stack. Make sure that in Settings > System > Notifications is turned on and “Do not disturb” is off; install any pending Windows Update; then restart the shell in Task Manager > Windows Explorer > Restart.

Next, run health repairs from an elevated Command Prompt run:

sfc /scannow
DISM /Online /Cleanup-Image /RestoreHealth.

Vishal K 0 Reputation points

2025-09-14T18:43:27+00:00

My notifications settings isn't opening and after running those commands issue still exists

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When trying to access notifications panel in windows, getting error "exception processing message 0xc0000005 unexpected parameters"

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