Error Writing Proxy Settings, Access is denied. This error may occur due to the proxy settings are not initialized correctly, which often happens after upgrading Windows 11, executing a command prompt, or doing a cold restart of your Windows 11. In this article, we will show you the solutions to fix writing proxy settings access denied error on Windows 11.
How to Fix Writing Proxy Settings Access Denied Error on Windows 11?
When the error occurs, you can take the following fixes to ensure your Proxy works smoothly.
Method 1: Perform a Clean Boot
The clean boot mode can diagnose whether the error is caused by the Windows 11 apps or third-party program, or to check if the writing proxy settings access denied error doesn’t occur in clean boot mode. Please follow the steps below:
Step 1: Launch Run by pressing Win +R;
Step 2: Enter msconfig and click OK to launch System Configuration;
Step 3: Click Services tab and choose Hide all Microsoft services, and all the essential system services will be hidden;
Step 4: Click Disable All in the bottom right corner;
Step 5: Click Apply and OK to apply the changes, and restart your PC;
When the system restarts, you can see in the terminal windows hints the error writing proxy setting error or not. If not, it might be caused by a third-party program. Then you can uninstall the program temporarily.
Method 2: Disable Startup Programs
Step 1: Right click on the Win icon and choose Task Manager;
Step 2: Select Startup tab;

Step 3: Click on the Startup program and then click Disable button in the bottom right;

Step 4: Follow the steps above to clean up all the startup programs.
When all the startup programs have been disabled, restart your PC to check whether the writing proxy settings access denied error has been fixed or not.
Method 3: Renew IP Address Manually
The proxy error usually causes the internet connection. If this happens, please follow the steps release and renew your IP address manually.
Step 1: Right click on Win icon and choose Windows Terminal (Admin);
Step 2: Type the following command to release your IP in the Windows Terminal:
ipconfig /release
Step 3: Renew your IP address by entering Ipconfig /renew;
Then, just close the Command Prompt and check whether the writing proxy settings access denied error has been fixed or not.
Method 4: Roll Back Windows 11 to Previous Version
If all the above solutions are not working for your Windows 11, you ‘d better go back your Windows 11 to the previous version.
Step 1: Choose System under Settings Menu and click Recover;

Step 2: Under Recovery options, choose Go Back;
Step 3: Follow the steps instructions on the screen to roll back your Windows 11 to previous versions.
Till now, your Proxy errors might have been fixed. While it still exist, you’d better try Windows Reset, and we recommend you to take your computer to a experienced technical person to help fix the writing proxy settings access denied error.