So, I'm having the same issue, but I do NOT have Proxy server settings turned on within my LAN settings...

Found the issue here guys, worked for me! You have to turn off your proxy server within your LAN settings. Check out the article here how to do it - https://mtgarena-support.wizards.com/hc/en-us/articles/360001315386-Stuck-at-Checking-for-Updates-with-a-Null-Reference-Error-

Same problem

Having the same problem following today's update.

Same problem. Please help. Thankyou for your time.

I can confirm, same problem. Reset router/reinstalled etc. etc.
No dice

I am having the same problem

Same here

I have the same issue

Is there any updates or possible solutions to this issue?

I have tried all the solutions offered on this page: https://mtgarena-support.wizards.com/hc/en-us/articles/360038311432-Connection-Issues, and I previously contacted Customer Support to no avail.

i have the same issue

Hello,

It sounds like you may need some more troubleshooting advice, please submit at: https://mtgarena-support.wizards.com/hc/en-us/requests/new and select 'Technical Troubleshooting'.

Thanks!

Same here

Hello,

It sounds like you may need some more troubleshooting advice, please submit at: https://mtgarena-support.wizards.com/hc/en-us/requests/new and select 'Technical Troubleshooting'.

Thanks!

Error Updating Data