SMB access over domain trust -
Ok, this is a weird one.I cannot access file shares in a 2 way forest trust on 1 site only but works if the firewall is down! Monitoring log shows no dropped packets.Domain admin\enterprise...
View ArticleIssues with Active directory and Error message 80090302
Hello,We have run into a LDAP issue recently that has me stumped. We promoted a brand new domain controller that we spun up on windows server 2019. we then migrated one of our domain controllers onto...
View ArticleReplication issue between the Sites DCs
Hi Guys, we have a domain and two sites, one head office and a branch in different City. Head office has two DC as DC1 and DC2 on Windows 2008 R2 and also a DC3 in branch Windows 2008 R2. now the...
View ArticleUsers can't authenticate to DC when it has been moved to new host
We moved the main (and only) DC from one host to another and in the morning users could authenticate to the DC, they could ping the hostname, domain, ip address, I did the basic troubleshooting like...
View ArticleDomain Controller 2012 r2 somehow setup with DFSR - Our system is still FRS
I recently demoted a 2019 Server as a DC, after a month because I did not realize it was not compatible with the FRS replication in SYSVOL.I knew I had a replication error I needed to track down and...
View ArticleDomain Controller Not Working Properly
Our company infrastructure is below .Server NameOperating SystemServer RoleCORPDC01.pooja.comWin 2008 R2RollOver DCRODC02.pooja.comWin 2008 R2RollOver DCRODC01.pooja.comWin 2012 R2RollOver...
View Articleeventid 5722 huge amount
Hello, we had a huge amount of computer password change (40 x times more than usual)Since then, we have a lot of eventID 5722 and when we test computerchannel, we get a lot of false result. an usual...
View ArticleAdding a Windows Server 2019 Domain Controller
Hello All,I am trying to add a 2019 server to our existing domain and it gives me this error:verification of replica failed. the forest functional level is not supported. To install a Windows Server...
View Article[VULNERABILITY ADVISORY] Microsoft Security Advisory ADV190023 Microsoft...
Hi,This is with regards to Microsoft Advisory:[VULNERABILITY ADVISORY] Microsoft Security Advisory ADV190023 Microsoft Guidance for Enabling LDAP Channel Binding and LDAP SigningThus this mean...
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Reducing AD tombstoneLifetime
Hi, if i reduce the AD tombstoneLifetime value do the tombstone object immediately get cleaned up, or do they still wait the default 180 days to be removed. Also what is the process that cleans up the...
View ArticleThe sign in method youre trying to use isnt allowed.For more info contact...
Good Morning, After removing a group which was mistakenly added to Administrators users on that group cannot log-in to the Domain and are getting the above error . The workaround is to have them...
View ArticleRunning application from Network share fails
Several users are experiencing problems running applications on network shares in the past few weeks. One of the users is getting an error pop up: "The application was unable to start correctly...
View ArticleActive Directory: Object Visibility between OU's
I'm currently an intern at a company which uses a single Windows Server 2012 R2 DC. They make use of a Active Directory structure which includes both the employees of the company and external...
View ArticleUnderstanding DNS root domains vs Active Directory parent/root domain
Hello, I'm currently learning about the active directory infrastructure and the domain name system. As I'm reading, I understood the root domain of an active directory to be the base level of a web...
View ArticleWindows Firewall on Domain Controller
Hello All,We have 2016OS Domain Controllers in our Environment. Most of the Domain Controllers host DHCP server. Currently we have disbabled the Windows Firewall Services and we are not using...
View ArticleKerberos and MIM
HiI am trying to make everything authenticate with AES256 in our domain(s)However, one service account(used with MIM) still authenticates with RC4. The traffic is between two domains. Other traffic...
View ArticleImpact in Active Directory Certificate Service - upgrade domain and forest...
Hi,May i know if there will be any impact on AD CS (which is installed on a different server, domain joined. Certs are being used for Exchange Server) if i will upgrade the domain and forest functional...
View ArticleWindows 2003 server to Windows 2016 Server Upgrade , RDS ISSUES
Dear all,I have two Windows Server 2003 as Domain controllers with replication working very well, as they are old, i decided to upgrade them to Windows 2016 Server by creating two new windows server...
View ArticleActive Directory domaine Services error message
Hi ,I am facing problem with my DC (Windows server 2019) , i get error message when i launch active directory users and computer :error message :naming information cannot be located because library not...
View Articleapplication request LDAP dont work after upgrade schema
Hi all,We have 2008 R2 AD controller, we installed 2019 server as a AD controller and we upgrade the schema.Most of application using LDAP request stop working.example of error...
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