Sumatra PDF is a PDF, ePub, MOBI, CHM, XPS, DjVu, CBZ, CBR reader for Windows

Pages cannot be rotated in a djvu book

In a book in DJVU format, it is impossible to rotate the pages neither to the right nor to the left! It is possible to do this in other programs [WinDjView 2.1 and others]. PDF books turn pages without problems. Please correct this error! I used the latest version of SumatraPDF-prerel-13082 (32bit)

Known djvu handling problem with 3.2 recorded as

If rotating djvu is esential until fixed consider using 3.1.2 as an ExternalViewer

ExternalViewers [
	[
		CommandLine = "C:\Some folder\SumatraPDF-3.1.2\SumatraPDF.exe" "%1" -page %p
		Name = &Version 3.1.2 (Portable)
		Filter = *.*
	]
]

Change the path as appropriate to where you copy the zip contents from https://www.sumatrapdfreader.org/download-prev.html

That will allow you to open the current page in a working portable copy
using file Open in Version 3.1.2 (Portable)
Shortcut should then be ALTFV