Since you didn't detail 'what' those videos had you do - I suggest you 'reset' everything. (this of course has other possible issues)

Do it all til you get to 'test' ---- before actually testing -

Open c / program files / rockstar games / launcher - rightclick each .exe / application in there - properties, compatability, remove 'run as admin' checkmark - hit ok.
This is the default location - it may not be what was used. You'll have to find correct one. Same for all the others below.

Open c / program files / rockstar games / social club - rightclick each .exe / application in there - properties, compatability, remove 'run as admin' checkmark - hit ok.

Rightclick gtav in steam, properties, local files, browse local files - rightclick each .exe / application in there - properties, compatability, remove 'run as admin' checkmark - hit ok.

Open c / program files x86 / steam - rightclick steam.exe - remove the run as admin like all the rest. IF you do remove 'run as admin' for steam.exe , exit steam , open it back up.

Test.

Doesn't work? KEEP READING.

Exit steam. Rightclick steam, run steam as admin - try again.
If it works - you can set the steam exe/icon to run as admin to reverse undoing it.
*Some users may find they need to set steam, R* launcher, social club, and gta5 .exe's to run as admin. Some are capable of skipping steam, right to launcher. You must be methodical undoing it all, and testing.



Old thread - https://psteamcommunity.yuanyoumao.com/app/271590/discussions/0/3475107714843630491/#c3475107714843738265