May 3, 2021

After about 6 days of various bizarre network issues, based on instinct, I replaced my router. That resolved all issues (most of them unrelated to Eve Online) including server disconnects at or immediately after logging into Eve Online. One issue remained. The Eve launcher would hang, with the launcher window staying all white or all grey. Sometimes the Windows 10 task manager would show the application using up to 40% CPU with nothing happening on my ethernet interface, and at other times 0% CPU.

Some quick research led me to advice to run the short script below, and to “run as administrator”. The implication was that this would be a one time fix. In my case, I had to run the script every time I started the launcher.

rmdir "%LOCALAPPDATA%\CCP\EVE\QtWebEngine\Default\Service Worker\CacheStorage" /s /q
rmdir "%LOCALAPPDATA%\CCP\EVE\cache" /s /q

Further research didn't find any help for this specific issue, but provided some hints at things to try. The following sequence of steps seems to have eliminated all issues.

• Run the script above as administrator.
• Start the Eve launcher.
• In the top right corner of the window is a gear icon. Click it.
• In the right hand menu, select Launcher, and check off “Enable hardware rendering”. It was unchecked. The option to “Enable high DPI scaling” was already checked.
• Under the Tools/Cache menu item on the right is a sub-option called “Shared Cache”. Click on both the Permissions button, and the Verify button, and let each run to completion.

I cannot say precisely how or why this sequence of steps worked, but hope it may help someone else. The root cause of the problem appears to have been various bizarre network issues on both wired and wireless connections on my home network, which were resolved only be replacing my router.