Welcome Anshu Rompicherla,
Thank you for reaching out to Microsoft Q&A forum.
From what you described, simply removing the work account may not have removed all of the management policies that were previously applied. The screenshot showing "This content is blocked by your IT admin" and Windows Security reporting that "your administrator manages some settings" suggests that the device may still be enrolled in a management profile or have security policies remaining on the PC.
Before suggesting more advanced fixes, could you please check the following:
- Open Settings > Accounts > Access work or school
- Do you still see any work, school, or organization account listed there?
- If yes, please select it and choose Disconnect
- Is the Windows account you currently sign in with a personal Microsoft account or a local account?
- In the same Access work or school page, click any existing connection and select Info if available.
- Does it mention Microsoft Intune, MDM, or that the device is managed by an organization?
- Open Command Prompt as Administrator and run:
dsregcmd /status. Under Device State, please tell me whether AzureAdJoined, DomainJoined, or WorkplaceJoined shows YES.
Looking forward to your update.