Make sure that your password does not contain any special characters. I had the same issue and had to revert back to ePO 4.0. It was a nightmare. If you are using mcafee policy auditor make sure you install the same product version and extension version or you will not be able to get it to work again. This happened last October and I still can't get support to help me out with this. Good luck.
The errors would suggest a connectivity issue to the Sql server, as defined in the db.properties file.
db.properties is just a text file on the ePO server, you can open and review it for consistency.
To assist, it might be worth reviewing these support articles: KB51670, KB60358, KB51703 and KB53935. The articles cover some aspects of that file.
The KB search is linked from the service portal website: https://mysupport.mcafee.com/eservice/
Otherwise, you may find more detail in the MSI install/uninstall logs - searching for the last occurrence of the word 'failure:' normally find the relevant lines.
Hi.Changing the db.properties file did not resolve the problem however editing the registries (both 32 and 64 bit) as per McAfee KB#:KB60389 did and I have now successfully installed epo 4.5. Many thanks for your assistance with this.
I had the same issue, but mine was related to downloading the zip file. I had to right click on the zip file, and then select unblock. After that, unzip the files and that corrected my problem.
Hope this helps