Error: ArgumentNullException After a Move or an Upgrade
Symptom
Error:
System.ArgumentNullException: Collection cannot be null.Possible Cause
The database user does not have owner rights for the database.
Solution
Possible Cause
The IIS bindings do not match the correct portal alias.
Solution
Possible Cause
Incorrect connectionString
entry in the web.config file.
Solution
Possible Cause
The Application Pool Identity account does not have modify rights for the DNN Installation folder.
Solution
Parent topic: Troubleshooting
Related information
Priyanka Bhotika
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