Every single time that I try to create a new instance of 26R1 (even after rebooting my machine), I get these errors right away and the installer stops:

Even if I press OK, I get more log errors:

If I press ignore, I just get more of these errors about the other log files that the installer created.
I’ve deleted the log files and restarted the install but the log files just get recreated with the same access errors.
Question: how to get past these log errors so I can create a new instance?
Here’s the full error:
Cant't create the site 26R1
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Inner Exception:
Exception occurred while deploying the site files.
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Inner Exception:
Exception occurred while backing up the files from 'C:\deployment\sites\26R1\' directory. Try to do it manually.
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Inner Exception:
WARNING: The process cannot access the file because it is being used by another process.
C:\deployment\sites\26R1\Logs\log_prepare_2026-04-09_11-11-53.txt
WARNING: The process cannot access the file because it is being used by another process.
C:\deployment\sites\26R1\Logs\log_process_2026-04-09_11-11-53.txt
WARNING: The process cannot access the file because it is being used by another process.
C:\deployment\sites\26R1\Logs\oem_2026-04-09_11-11-53.txt