Unexpected error during configuration: System.NullReferenceException Error

[Gencho]

Hello experts,

Could someone help me with the following error, please?

In my test environment I was working on how to rollback a backup of my Postgres database in order to restore if, for any reason like an upgrade the installation or files get corrupted, we can just restore the backup, so what I did was the following:

• Create a backup of my Postgres database and the certificates
• I Upgraded from 2019 November patch 4 to 2020 September patch 4 release
• I Uninstalled September 2020 release
• I Installed the November 2019 release (here is where I got the error)

After this, I cannot go further than this, also I tried to install the September 2020 release but I don't have luck, you can see the error in the zip file attached

@Giuseppe_Novello  any idea?

My SO version is windows server 2012 R2

Thanks and regards!

[Giuseppe_Novello]

Click " View log folder" > look for the last log prior it had "_rollback" , possible "dispatcher" > Search "value 3" and this will tell you the actual of why it failed. 

cheers. 

[deepaksahirwar]

Resolution:

For September 2018 and newer:

Option 1:

• Open the Local Security Policy module
  • Right Click on Run > secpol.msc
• Navigate to Local Policies > User Rights Assignment:
  • Allow log on locally: Ensure that the Qlik Sense Service account is provisioned this right
  • Deny log on locally: Ensure that the Qlik Sense Service account is not listed there, either directly by name or indirectly by group membership
• Complete installation of Qlik Sense
• (Optional): Revert the changes to the rights assignment post installation

Option 2:

• Install Qlik Sense November 2017 and upgrade to the desired build of Qlik Sense

Option 3:

Install Qlik Sense using its silent installation syntax. See Performing a silent installation with the skipvalidation parameter.