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Cities Skylines II Ultimate Edition v1 5 4 F1
Posted: 22 Feb 2026, 23:10
by Sacred5010
Latest version fails to launch, installed with/without low resource mode. Installed in boot drive and secondary SSD, same result.
Windows 11
RTX 3060ti
Ryzen 7 3700x
32GB RAM
Content integrity check failed
System.Security.Cryptography.CryptographicException:
Bad PKCS7 padding. Invalid length 0
Re: Cities Skylines II Ultimate Edition v1 5 4 F1
Posted: 23 Feb 2026, 11:14
by KiNG
do you have windows file compression enabled?
it seems to be an issue on windows not really the game fault
``` Go to the folder where the game is installed
Right-click > Properties > Advancedâ¦
Uncheck: âCompress contents to save disk spaceâ
Apply to all files and folders
Then reinstall the game```
is is ment to fix it
Re: Cities Skylines II Ultimate Edition v1 5 4 F1
Posted: 23 Feb 2026, 16:18
by Sacred5010
KiNG wrote: 23 Feb 2026, 11:14
do you have windows file compression enabled?
it seems to be an issue on windows not really the game fault
``` Go to the folder where the game is installed
Right-click > Properties > Advancedâ¦
Uncheck: âCompress contents to save disk spaceâ
Apply to all files and folders
Then reinstall the game```
is is ment to fix it
This does not work sadly
The folders were already unchecked
Re: Cities Skylines II Ultimate Edition v1 5 4 F1
Posted: 23 Feb 2026, 17:32
by KiNG
theres multiple posts about it on the steam pages so its a known issue, just have to wait for an update from the devs.