What should I do if my US marriage certificate and daughter’s birth certificate are not accepted for my Non-O visa application in Thailand?

I do not have any family

You can order certified copies via VitalChek, have them authenticated by the U.S. Department of State, then legalized by the Thai Embassy in Washington or LA. A family member in the U.S. can handle this for you, and once done, get them verified by the MFA in Thailand.

@Ashanti *******

So, for clarification, this is for:

Non–O Trailing Spouse and Trailing Child Visas/Extensions at the Local Thai Immigration Office and the Local Thai Immigration Office wants:

Legalised/Authenticated/"Apostille'd" copies of USA documents:

County Marriage Certificate and County Birth Certificate already Authenticated/Legalised up to U.S. State Level, but not yet up to Federal Level by the federal U.S. Department of State (U.S. State Department) in Washington, DC and subsequently by the Thai Embassy/Thai Consulate in America ???

I’m Aussie but had to take my originals to Bangkok Aus embassy, got my passport, marriage and birth certs certified there, then had to get them translated and MFA stamped for immigration

The us embassy does not validate gov document

If you were married overseas.. meaning not in Thailand.. then the first step is to get a copy of the original marriage certificate certified by the Embassy (or sometimes it's a service performed by the Consulate) of the country where your marriage took place.. for most people that's likely to be their home country.. so you may be able to do this before you leave for Thailand.. however, you could have had a vacation style wedding of course, which would need to involve a foreign Embassy in the process.. but if you are already in Thailand then things are slightly different.. first step, your overseas marriage certificate has to be authenticated by the relevant country Embassy in Bangkok before you can move on to the second step.. which is getting a copy of the original (now already Embassy certified) marriage certificate translated into Thai and getting the translated copy certified by the Ministry of Foreign Affairs (also in Bangkok) .. only then will you have the correct documents to be able to register your marriage at your local Amphur in Thailand.. which is necessary to obtain a Kor Ror 22 (another certificate) from them.. which is a document you will need to support your non-o married visa application at Immigration.. given the complexities and inconvenience involved in this process I'd say it's probably best to engage an agent who knows the ropes and can expedite this for you.. we are in CM and didn't want to waste our time and energy traveling to Bangkok in person.. so we found an agent that specialises in translation services that could do everything for us and produce the certified marriage documents.. this process took them around 2 weeks from start to finish and we agreed to attend the final document collection at the International Convention Center in CM to reduce the wait by a few days.. otherwise it would have been a 3-week wait.. the fee was just over 5,000 baht in total.. and they threw in a translated copy of my passport for good measure.. which wasn't needed by the Amphur to register the marriage but i guess it might come in useful later.. be aware that your Amphur may try to retain the original certified copies instead of simply taking copies of them for their records.. which is outrageous imo since you may need to use them elsewhere in the future.. and you won't want to have to repeat this exercise and incur further unnecessary expense.. i pushed back hard and told our Amphur they could only keep them if they gave me a legal undertaking to return them if i needed them.. or alternatively, agreed to pay an agent the necessary fee to produce another set for me.. and after deliberation and consultation with superiors they backed down and simply took copies which they had us certify as genuine copies!

Go to your Embassys Web Site it will tell you exactly what you need to know and do in what order

Alternatively you can get your original marriage certificates translated by an embassy accepted translation office, and then legalized by your country's embassy in Bangkok, and then "co-legalized" by the Thai Ministry of Foreign Affairs in Bangkok (or in their subsidy office in Pattaya). With these documents, you need to REGISTER your marriage inside Thailand on an AMPHUR office. So when you apply for the 1-year Extension of the Stay Permit based on being married to a Thai wife, you will need a freshly printed "Kor Ror 22" marriage registry printout from the Amphur - and this you will need every year for the next application to the extended stay permit

Your documents have to be authenticated by the Thai embassy in your home country and then verified by the MFA in Thailand. You'll have to get an agent to do it for you if you don't want to go back to do it yourself.