Communications error on hack of a specific portal
Sometimes you can not hack a portal.
The missions community first noticed because it affects your ability to complete a mission.
Recently it shows a 'communications' error and you can more easily tell that the issue is occurring.
There is no known fix / work around. The issue will go away after about an hour.
During kureze effect 3rd phase another agent showed me the issue occurring for them. Only 1 portal was unhackable for them. It was hackable for me.
The issue affected me this weekend when I was hacking 2 portals and one of them became unhackable - communications error. I tried driving 1 mile away, reboot the phone, and return to the portal about 10 minutes later, but the issue still occurred.
Its quite rare but has happened for at least 5 years, back in the redacted days, so likely a server side error.
It's likely more common than we think, but previously it didnt show any indication a hack had been attempted. Now it shows a communications error, but those are common for a variety of errors.