After the update I get an Invalid Client error message, saying I am using an invalid or outdated client, and that I have to patch. However, no more patches are waiting. I tried repair, but to no avail, problem persists.
Server, probably, is still chwecking against the old code version
Wait until [complete] on the banner then see if the issue persists
at that point panic if it does, but until 17:00 UTC or when ever ZOS turn the server back on (probably much later)
DO NOT PANIC
“Be as a tower, that, firmly set,
Shakes not its top for any blast that blows!” Dante Alighieri, The Divine Comedy
Likely due to the ongoing server maintenance. I’d wait until the servers are back up and try again without taking any further action. I got the same error and will wait for the servers to come back up.
PC/NA
PvE
Intel I9-9900K
32GB RAM
2x 1TB Samsung 970 Pro NVMe M.2 SSDs
Nvidia RTX 2080 TI 11GB
If I remember correctly you get that message too, if your client is more advanced than the server and as the server is still in maintenance, that's most likely the case atm. So, no reason to worry.