How do I solve 'Operation must use an updateable query' errors?
WHen using Microsoft Access, you may have come across one of the following errors:
This is almost always a permissions issue. Be sure that the MDB file is in a folder where IUSR_<machineName> and IWAM_<machineName> have read/write access (because the anonymous user needs to create an .LDB file when modifying the database). If you are using Windows Authentication, make sure all authenticated users belong to a group that has read/write permissions on the folder where the database exists, and if you can't use a group, step through each user and check that they have sufficient privileges.
Also be sure that the MDB file itself isn't marked as read-only, and that you don't have the MDB file open (particularly in exclusive mode) while trying to reach the DB from ASP. Make sure you are not using simple file sharing, that you are using an NTFS volume, and that you open Access using the mode adModeReadWrite (see Article #2142 for sample usage of the mode property of ADODB.Connection).
For permissions issues, see Article #2205, Article #2326 and KB #175168 for more information.
Another possible reason is that the column actually can't be updated, for example because of a constraint relationship with another table.
Of course this error could also happen if you're storing your Access database on a floppy disk that has write protection enabled (or that is full). Please don't do this; using Access is inefficient enough. You don't want to add floppy seek time to your performance issues.
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