91ca.tmp is a program which is most likely legit. So, if 91ca.tmp is on your system, it is most likely ok, and will NOT cause problems. Even if your PC is virus-free, it is still recommended to run a well-known antivirus with a good track record, in order to yourself your PC against threats.
The default name and directory where this program is stored is
The MD5 fingerprint for this executable is 4baa9157ebebbe84441258470aa97481.
This application is NOT a Windows service. This is good.
This executable uses the net to communicate. Today this is ok. For example, most of the apps on your PC check for updates. In order to do this, Internet communications are required.
This app runs in 32-bit mode. It can not use the full power of nowadays' PC chips. This ordinarily happens because the makers did not upgrade it to 64-bit code.
91ca.tmp appears to have visible windows. This means it doesn't operate in a kind of invisible mode. Its activity is clearly displayed to you.
The digital signature is missing from this program. The publisher did not sign it. This is probably bad.
This executable does NOT have an uninstall command stored in registry.