Portal.microsoft.com - appears blank for some users

[bodminman]

Good morning,

 

We’ve a got a weird issue where some users cannot get to their school email by going to portal.microsoft.com or outlook.com/ourdomain.co.uk

 

There are no errors, just a blank screen.

 

Any ideas?

 

Thanks

[XiJ]

I find the whole MS office portal flakey at best. Different browsers might help you here - but what works one day might not work the next!

[Katy]

Blank screen usually means there's something blocking you from accessing secure.aadcdn.microsoftonline-p.com (it got accidentally added to some filter's block lists last week, and accidentally blackholed for anyone using 9.9.9.9 dns)

[Chrisauk]

We too are getting this issue and are currently investigating. Doesn't seem to be filtering related. Very strange!

[bodminman]

Blank screen usually means there's something blocking you from accessing secure.aadcdn.microsoftonline-p.com (it got accidentally added to some filter's block lists last week, and accidentally blackholed for anyone using 9.9.9.9 dns)

 

We currently have this url added to our Destination Exemptions (url) and External Ignore (IP) on our Lightspeed Rocket and it's still delivering the blank screen.

 

- - - Updated - - -

 

We too are getting this issue and are currently investigating. Doesn't seem to be filtering related. Very strange!

 

Very strange indeed.

 

I'm trying all sorts at the moment so if I get anywhere I'll post it here.

[BKGarry]

I have been getting this randomly this morning.

 

Thought I was going crazy and it was my fault (we migrated from using IAM Cloud in the half term to using our own onsite ADFS server)

[MkII]

A definitions update to our watchguard firewall caused this issue for us.

 

They rolled it back we heard, although a reboot was necessary to pick that up.

Edited February 26, 2018 by MkII

[bodminman]

Right then, although secure.aadcdn.microsoftonline-p.com was added to both the External allow and Ignore list, the Lightspeed box was fstill flagging it up as Malicious. So I have now recatagorised it back to 'Microsoft. and all is now workign as it should!

 

Thanks for the help.