Chrome desktop · Research guidance. Instructions are based on publisher guidance; a UK IPTV account was not tested on this platform.
Choose the scope before clearing
Identify the exact website and the symptom you want to compare. A sign-in loop on one site does not automatically require deleting every browser session. Keep necessary account recovery information available privately, because removing cookies or site data can sign you out and remove saved preferences.
Use the specific-site list
Google documents Settings, Privacy and security, Third-party cookies, then See all site data and permissions. Search for the intended site and use its delete action with confirmation. Read the actual entry carefully, particularly when similarly named domains appear; do not delete a broader set than the comparison needs. Compare the hostname rather than relying on a familiar page title.
Do not confuse deletion with an exception
The same area also contains third-party cookie choices and site exceptions. Deleting existing data and allowing future cross-site storage are different actions. If the task is a controlled clean-session comparison, note whether any exception was also changed so the result does not combine two unexplained variables.
Repeat the original task once
Return through the legitimate website address, sign in only if appropriate and compare the original action. Keep the exact resulting error if it remains. A new login prompt after the cleanup is an expected possibility, not proof that the provider erased the account. Restore any temporary privacy exception when it is no longer needed.
Questions, answered
Can deleting cookies sign me out?
Yes. Google explicitly warns about sign-out and lost preferences.
Is deleting data the same as allowing third-party cookies?
No. They are separate controls with different purposes.