Disabled switch (bad DNS)

[Le Thanh Ha]

Disabled switch (bad DNS) occurs every 10-15 minutes and stays for 2-5 in Disabled switch (bad DNS) mode and while in Disabled switch (bad DNS) mode, no DNS queries work so the customer says "no internet access"

[Le Thanh Ha]

Disable Switch (bad dns)

[MHM Cisco World]

https://community.meraki.com/t5/Switching/Disabled-switch-bad-DNS-no-internet-connectivity-for-all-devices/m-p/59319

it Meraki check the link above 

[Rich R]

As @MHM Cisco World has highlighted this is probably a Meraki problem so you might have been better off posting in the Meraki community.  You should always provide as much information as possible about the problem in order for others to be able to help.

Some more links to check:
https://www.reddit.com/r/meraki/comments/8f504u/periodic_bad_dns_on_switch/
https://community.meraki.com/t5/Switching/Disabled-Switch-BAD-DNS/m-p/32382

RobinsonRoca has summarised the issue nicely at the last link.