try to change your vpn tunnel if you have, or try to run as admin and update the launcher. if no thing happens, try to open autoupdate.
Hello, maybe your client is not up-to-date. Try to run AutoUpdate.EXE or apply the following patch to your client folder: https://www.mediafire.com/file/c3x6a6f6bn90vbn/iMUPatch_Nov-27-2023.zip/file
And make sure "Memory integrity" is switched off in your windows. Read more: Here