have you got a vpn installed by chance?
try this
Method 1: Run a System File Checker (SFC) scan.Follow the steps and link below for the same
1.
System File Checker(sfc) scan will make Windows replace corrupt or missing system files on your computer.
Steps to perform sfc scan:
1. Click Start, click All Programs, click Accessories, right-click Command Prompt, and select Run as Administrator.
2. Click Continue or supply Administrator credentials if prompted.
3. In the Command Prompt window type the following, and press Enter:
sfc /scannow
4. You should see the following on-screen messages:
Beginning the system scan. This process will take some time.
Beginning verification phase of system scan.
Verification % complete.
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