Before we could get a Thailand visa(3month/6month?) in Vientiane, laos.

Now Lao/Thai border is open...

You can indeed go to the thai consulate in Vientiane and apply for a visa to thailand.
That consulate has required an online appointment booking (since before this covid sh*t show started) so make sure you book one or you won't get in the gate.

You book an appointment here
Online appointment booking link

This is the main page about visas
Visa Info Page Thai Consulate Vientiane

 

 

The visa requirements can be found on the consular section website where you make the appointment.

The embassy website has very little info about visa applications now.

OP what type of visa are you intending to apply for in Vientiane

tried registering on that booking website, it doesn't ask for a password to be made

 

tried the forgot password after registering, no email received

49 minutes ago, cyril sneer said:

tried registering on that booking website, it doesn't ask for a password to be made

tried the forgot password after registering, no email received

it has been a while since I registered on the site. It think it gave a temper code to login with.

Check you spam folder for the email.

You may not get a email until tomorrow if it is all done manually.