You need to add a local administrator to your local machine with another local administrator
Policies are overwriting your settings every day
You can create the following batch file and run it:
C:\WINDOWS\system32\runas.exe /user:domain\localadmin /savecred "c:\windows\system32\net.exe localgroup Administratoren domain\a-user /ADD"
You need to change domain for your domain. The localadmin has to be a domain account with local administrator rights and the user a-user will be added to the group of local admins.
The parameter /savecred will make it easy to add it to your autostart.
About the Author
Wim Peeters is electronics engineer with an additional master in IT and over 30 years of experience including time spent in support, development, consulting, training and database administration. Wim has worked with SQL Server since version 6.5. He has developed in C/C++, Java and C# on Windows and Linux in different European countries and different European languages. He writes knowledge base articles to solve IT problems and publishes them on the Lubby Knowledge Platform where he is one of the most important contributors and the main developer.