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![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(28.799999999999997, 93%, 12%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3ELT%3C/text%3E%3C/svg%3E)
We have a problem with Exchange 2016, when I access DNS Lookup of a mailbox server in Ecp, I get an error like this, help me to solve
![](data:image/svg+xml, %3Csvg xmlns='http://www.w3.org/2000/svg' height='64' class='font-weight-bold' style='font: 600 30.11764705882353px "SegoeUI", Arial' width='64'%3E%3Ccircle fill='hsl(41.6, 80%, 14%)' cx='32' cy='32' r='32' /%3E%3Ctext x='50%25' y='55%25' dominant-baseline='middle' text-anchor='middle' fill='%23FFF' %3EAL%3C/text%3E%3C/svg%3E)
Hi @ Luu The Hai，
Regarding this error, I would like to confirm the following points with you:
1. Is the current account a global administrator account?
2. When did you not open this page? Did you change your account permissions?
3. Check Event Viewer to see if there are more detailed errors.
Maybe you can share the screenshot after removing all privacy information like domain name and email addresses. Thank you !
1. Is the current account a global administrator account?--> yes
2. When did you not open this page? Did you change your account permissions?-->we're using 3 node and two node had problem, 1 node is everthing ok
3. Check Event Viewer to see if there are more detailed errors.--> You want to see the detailed Log in which section? Please help me with the detail link
Hi @ Luu The Hai，
In addition to this, there are other problems in these two problematic nodes, such as on this server can be opened correctly whether Outlook Anywhere pages ？
Please check whether there are any related errors under Event Viewer-Windows Logs-Application on the problem server.
Hi,
It has been a few days and I am checking in to see how things are going on with this issue.
Does this issue have any updates? If it has been resolved, please share your solution, your action would benefit others who have similar issues
Confirm permissions on the service account for the Configuration container that's created for the product...
CN=QGPM,CN=Quest,CN=Services,CN=Configuration
Confirm permissions on the service account for the SYSVOL container where the polices actually reside.
Also confirm if you can actually create a GPO within the native tools.
Hi @ Luu The Hai， Please refer to the following steps to check settings and see if it changes :
1.Check that TLS 1.2 is enabled on all servers, and disable TLS 1.0 and 1.1 .
2.Check whether the certificate binding in IIS is correct and check the authentication of each site.
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Thanks for you support, we'ere fixed after windows update :)