The above Microsoft office 365/2021/2019 installation Error code 30015 11 primarily appears when you try to open the Office program on Windows 11 / Windows 10 . It has been observed that this Office 365/2021 error code 30015 11 needs to repair or reinstall and you can read the below information for more knowledge.

Solutions for Microsoft Office 365/2021/2019 Installation Error Code 30015 11
How to do disc-cleanup to fix the Office 365/2021/2019 Error Code 30015 11?
Method 1 – Creating shortcut
Method-2
It takes some time if the computer has too many junk files to clean up
1. The first attempt is to check if there is any previously installed Office 365/2021/2091 program with the same version. That needs to be removed and then the installation should be commenced from the beginning
2. If we don’t see any previously installed similar Office 365 programs, It is recommended to run a network check through the command line. The command prompt should be opened using the administrative permissions and then the network command which needs to be executed as follows
Nslookup office365.com
Irrespective of the version of your office program, it is a very common line to check the status of your previously installed office p.rogram and features
The server name should not show you as unknown
3. If the server name is shown as unknown, restart your router or the modem and execute the same steps again
4. If the server check passes correctly, then use the other setup file which is related to 64 bit
5. If the Microsoft office 365/2021/2019 error code 30015 11 , still appears after the installation, attempt to repair the office 365 programs
6. If the Office repair fails again with some office 2021 installation error code 30015 11, a re-installation of the office Program is required
7. If the Office repair succeeds and you still see the same Microsoft office installation error code 30015 11, then Perform a system file scan on your windows using the following steps. You can perform a system file scan process which can be
- Started on a command prompt window with administrative rights.
- SFC /SCANNOW in the command line that needs to be executed.
How to do an SFC SCAN to fix the office 365/2021 installation Error Code 30015 11?
Firstly, Click on the start button and type “cmd“
After that, Open “Command prompt window” and
Then, Type “SFC/SCANNOW” PRESS enter button

- Finally, The scanning process start and this process takes some time to finish. Please wait until it gives results
In Conclusion

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