The ramblings of a computer geek
After a power cut one of our Windows 2008 R2 VMs was dead, even though it was cleanly shutdown by the UPS something must have happened and it would not boot. When booting the VM it would just boot straight into the Windows Recovery tool, this was not good news. Running any commands against the … Read more
I was getting the errors of “The Certificate is Invalid for Exchange Server Usage” to “The certificate status could not be determined because the revocation check failed.” Here is how I fixed them in our test environment before we deployed to live, the first error is a common one, the second one seems to only … Read more
Upon setting up a “send as” permission a mailbox for a user I got stuck. Even though the permissions on the user object were correctly setup for “Send As” when trying to send as a user with Outlook 2010 I kept on getting an error message. After double and triple checking the permissions I concluded … Read more
Upon the setup of the new Windows 2008 R2 DNS servers there is a problem that the DNS lookups for external domain fail; internal domain name resolution is unaffected. Restarting the DNS server (or the whole server) resolve the problem, as does clearing the cache. When the problem is happening, an nslookup command issued for … Read more
When depromoting a domain controller I started to get this error: “The operation failed because Active Directory could not configure the computer account <COMPUTERNAME>$, on the remote domain controller <COMPUTERNAME>$ “Access is denied.” What I did to try and fix it: · Verified the “protect from accidental deletion” tick box not … Read more
I kept getting this bloody ‘440 Authentication Timeout’ page in IE. And I would get it instantly, so there was no way it was actually timing out. A quick google on this error returned a half dozen pages of threads, with no resolutions. As a result, I figured I’d better blog this for future reference … Read more
I had some amusement when someone tried sending a 1MB email to 400 people and the server was set for direct delivery. It flattened out the ADSL and caused lots of problems, first job was to click the “disable outbound mail” button in the Exchange System Manager under queues. Then temporarily close port 25 on … Read more
Recently I had the joy of an oversize (16GB) exchange database that would not mount, I needed to do a emergency defrag of it and hes what I did. 1. First shutdown Exchange completely, including the information store service, to ensure we get a clean shutdown. 2. Now copy the files priv1.edb and priv1.stm files … Read more
Windows could not start because of the following file is missing or corrupt: <windows root>\system32\ntoskrnl.exe Please re-install a copy of the above file To resolve you could try booting from your windows xp cd into recovery mode or into the installed version of recovery mode and run: cd c:\windows\system32 copy “..\driver cache\i386\ntoskrnl.exe” or cd “c:\windows\driver … Read more
net stop w32time net time /setsntp:pool.ntp.org net start w32time W32tm /resync Note: you need to run this command on the PDC emulator in your domain. This is the server that is at the top of the time infrastructure.