Ad.doubleclick.net is not allowing the connection.

Hello

Let's start with a diagnosis of the PC:

Read the entire procedure carefully before posting the reports
Do not post them directly in the messages as they are unreadable and incomplete

The reports FRST.txt and Addition.txt are expected

All reports must be hosted on https://security-x.fr/up/ and you should indicate the links obtained in your response

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--> The SmartScreen filter may trigger an alert. Click on Actions or More Information then on Run anyway

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--> Download the FRST version of Farbar, compatible with your system and save the file on your Desktop

--> For a 32-bit system
--> For a 64-bit system

How to find out which 32-bit or 64-bit version is running on my system?

--> Wait for your browser to offer you the download to save, without clicking anywhere, especially not on the sponsors of the page.
--> Close all applications, including your browser
--> Double-click on FRST.exe and click Yes to accept the Disclaimer
--> On Vista, Windows 7 / 8 and 10, you need to launch the file by right-clicking -> Run as administrator
--> Wait until it indicates The tool is ready to operate
--> In the main menu, click on Scan and wait for the analysis to complete
--> At the end of the scan, the reports FRST.txt and Addition.txt are created. Post these reports in your next response.
--> The reports are saved in the same location as the tool and under C:\FRST\Logs

RE_

--> Copy what is below from start:: to end:: (without pasting it anywhere)

--> Open FRST (or FRST64) as an administrator and click on Fix

--> A fixlog file is created in the same location as FRST, post it

--> Let me know if you still have the problem

start::
closeprocesses:
createrestorepoint:
copy: C:\Windows\System32\drivers\etc\hosts C:\Users\Windows\Desktop\save hosts
hosts:
emptytemp:
end::

RE_

No signs of infection.

Uninstall Spybot - Search & Destroy (obsolete and unnecessary)

Which browser do you have the problem on? Can you take a screenshot?