Avatar of CaptainGiblets
Flag for United Kingdom of Great Britain and Northern Ireland asked on

Windows server 2012 hyper-v machine not responding properly after memory upgrade - need help asap

My exchange server (2013) is on a hyper-v machine. Both host and virtual machines are 2012 r2.

I upgradedthe ram chips from 32gb to 64gb and host machine booted up fine. Changed ram on virtual machine to 60gb and booted it up.

All seemed fine but then i noticed that there were some problems. Exchange never came back online and i cant rdp in to the server, i can only log in via host machine hyper-v session.

The server pings, and i can see services etc, but if i try to say open control panel then > windows firewall it will freeze. I cant get in to network options either.

I have now swapped back to the original ram and rebooted but still having the same issue.

need help with this ASAP as this is only exchange server in our domain so all emails are currently down.

I can get in to the event viewer but nothing seems to jump out either on host or virtual machine.
Hyper-VWindows Server 2012Exchange

Avatar of undefined
Last Comment

8/22/2022 - Mon
Cliff Galiher

Sounds like the OS got corrupted. You could try a scandisk, since it is booting. And/or restore a backup from a point in time that it was working. If your DR strategy is sound, you can even move the logs from the failed machine to the restored backup and replay them so there is no data loss from the last backup time.

booting in to safe mode, i disabled windows firewall service. Rebooted and everything is fine.

So, main problem is sorted but why would the firewall service cause this?
Cliff Galiher

It likely didn't. I suspect it is a symptom, not the cause.
Experts Exchange is like having an extremely knowledgeable team sitting and waiting for your call. Couldn't do my job half as well as I do without it!
James Murphy
Seth Simmons

You could try a scandisk,

someone had a DOS flashback :)

Rebooted and everything is fine.

is that with the 64gb installed or still with 32gb?

With 32. Its up and running so I don't wanna tempt fate and mess around with it more. Still looking for more input into why this could be happening, however as long as nothing arises ill leave any changes till weekend
Cliff Galiher

SanDisk, chkdsk, tom-ay-to, tom-ah-to.
Try out a week of full access for free.
Find out why thousands trust the EE community with their toughest problems.

View this solution by signing up for a free trial.
Members can start a 7-Day free trial and enjoy unlimited access to the platform.
See Pricing Options
Start Free Trial
Ask your own question & get feedback from real experts
Find out why thousands trust the EE community with their toughest problems.

This was the solution.