COD Vanguard error code 0x887a0005 is one of the most common issues.
This guide onMiniTool Websitewill help you a lot on that.
In terms of different situations, we come up with corresponding fixes.

How to Fix COD Vanguard Error Code 0x887a0005?
If you have no ideas about how toupdate your graphics driver, follow the next steps carefully.
PressWindows + Xto openStart Menu.

Click onDisplay adaptersand do a right-select your graphics.
Unless Windows doesnt find a new driver, you dont need to look for one on the manufacturers website.
In this case, you had better set your graphics gameplay to low.

Step 1. initiate the game and pop crack open the game prefs.
ClickGraphicsand set everything in the list toLow.
ChooseApply Settingsand rerun your equipment to see if COD Vanguard error code 0x887a0005 persists.
Right-smack the shortcut of the game and chooseProperties.
Move to theCompatibilitytab and tickRun this program as an administrator.
COD Vanguard is a resource-consuming program thus any unwanted and unnecessary apps can threat the performance of this game.
Right-smack the taskbar to launchTask Manager.
Go to theStartuptab, right-click all items except COD Vanguard and selectDisable.
Step 3. power cycle your PC to make these changes effective.
This progress will scan the integrity of the game files and repair them if necessary.
Scroll down in your games library and locateCOD Vanguard.
Step 3. smack the gear icon to openSettings.
Click onScan and Repair.
SelectBegin Scanto start the program.
Heres what to do to change theVirtual Memoryto system managed size.
PressWin + Xto openQuick Start Menu.
Click onSystem>About>Advanced system configs>Advanced.
UncheckAutomatically manage paging file size for all drivesand checkSystem managed size.
ClickOKto apply the changes.