@Carl Yes, I did call in, but to TP-Link. Case #[TPLINK SUPPORT #308197]: SRCN19111600117 + Archer A20 I wouldn't even KNOW how to open a case with Trend Micro as I do not 'own' anything I would...

Well, bought it in Sept. 10th this year.... Major E-mail problem, I can NOT send E-Mail. Get this error: An error occurred while sending mail: The mail server sent an incorrect greeting:...

@Raikke, No problem with the translation here, hope my reply translates OK. Was thinking, might want to try booting into SAFE MODE WITH NETWORKING on one of the W10 PC's. Not always easy to do, but...

@Raikke If you really think it is OS related, then I'd think it could be your Security... Windows Defender couldn't/wouldn't possibly be the cause. However another Security Suite you are running...

@Raikke Raikke wrote @IrvSp Not answer any ????? Well, for one I don't work for TP-Link and just was curious? Some answers confused me as well? " But the CPE-510 does NOT work on WIN10 powered...

@ObjectiviTea , Don't know about blocking, but I located this for allowing ports to be forwarded: https://portforward.com/tp-link/archer-c5400/ Hope this helps.