FIX: Trend Micro Virus Pattern not Updating Issue

Easy way to fix Trend Micro Virus Pattern not Updating Issue with the help of following steps:

Step 1:The Trend micro is one of the oldest scan engines for Microsoft exchange.
Step 2:The engine is designed to work closely with the VSAPI 2.5 and 2.6 versions. (Virus Scanning Application Programming Interface)
Step 3: Off late, Microsoft has been facing errors with the Trend micro virus scan updates.
Step 4:The last status update will show updating but will not change over time because the dates of the record are seen out of date or expired.
Step 5:You can also perform the update manually to avoid the error, but again the message would read “Error: Unable to update the pattern file. Another process uses it. Please wait and try again.”
Step 6:There is only one solution to fix the error.
Step 7:Open the file directory /var/iwss and delete either one or all the files temporarily to check if the error is fixed.
Step 8:The following files in the directory are,
Step 9:Pautpdate
Step 10:Engupdate
Step 11:Phishupdate
Step 12:Spywareupdate
Step 13:Tmufeengineupdate
Step 14:Tmuferuleupdate
Step 15:Sigscanupdate
Step 16:Itrrapupdate
Step 17:The reason for this error could be because the IWSVA allows only one update at a time.
Step 18:During an update, the IWSVA locks the other files to prevent the update from happening at the same time.