The problem is with DCOM permissions. Try the folllowing: -
Symptom:
When installing Netbackup 4.5 on a Windows 2000 server, the above error is received
Exact Error Message:
"NBInstDlg.dll cannot load resdll.dll"
Solution:
CAUSE
This behavior may occur because the Default Access permissions have been changed in the Dcomcnfg.exe tool.
RESOLUTION
To resolve this behavior, perform the following steps:
Click Start.
Click Run and type:
Dcomcnfg
Click OK.
Click the Default Security Tab.
In the Default Access Permissions box, click Edit Default.
Verify that both System and Interactive are listed with Allow Access. If either are missing, add them by clicking Add.
In the List Names From box, ensure that the local computer name is listed.
Set Type of Access to Allow Access.
Select the account that is missing and click Add.
Repeat the above step if both accounts are missing.
Click OK.
Click OK, and then click OK again to exit from the dcomcnfg command. For your settings to be updated you must log off, and then log on to the system.
MORE INFORMATION
If the list of Access permissions is empty, the system and interactive accounts have implicit access rights. If a user or group is added to this list, the implicit rights no longer apply and only the users explicitly listed can have rights. This is a change in behavior from Microsoft Windows NT 4.0. In Windows NT 4.0, the system and interactive accounts maintained their access rights even though they were not explicitly listed. The following article may resolve similar symptoms:
