Aja 10 Posted December 11 This topic summarizes my summary from nine hours of suffering and trying to fix the problem. Now I hope this information will help someone else dodge the suffering. After WIN 10 update I found out my configuration and setting in Arma have reset to default. After that, I decided to load back-up of my profile and found that Arma does not show this profile in the main menu as possible to load out. I decided to delete folders Arma 3 and "Arma 3 Other Profiles" from the Documents folder. and start up Arma. Arma loaded with a default profile (named after my user name) and I was only able to create a Player 1 profile that cannot be renamed. What got my attention was that there were no new folders in Documents. Those new profiles were saved in the Arma root folder and I was not able to edit them. I was trying to use the Arma launcher to manually select Arma 3 Other Profile folder from the backup, but during the loading screen I was stuck at "loading core problem". The internet told me to delete "cache.ch" but there was no file with that name. Also if I let the loading screen be up for enough time It creates a log file with the message: Allocator: F:\SteamLibrary\steamapps\common\Arma 3\Dll\tbb4malloc_bi_x64.dll [2017.0.0.0] [2017.0.0.0] Waiting for 'C:\Users\Aja\Documents\Arma3 - Other Profiles\DataCache\cache_lock' to be available I have tried to give full control of all folders to profile EVERYONE via file properties, but didnt help. I tried to choose a different allocator but did not help. I tried to verify local files, and as a last resort, I tried to reinstall Arma with precise deleting of every trace of Arma profiles and Launcher files from app data. After some time I found out that the problem was a new Windows function called Randosware Protection. It blocked access to those folders. The solution was hidden under options: "Allow an app through Controlled folder access". Share this post Link to post Share on other sites